Citation Rankings (Highly Cited Researchers) 2024 and list of influential and most cited researchers in Agriculture and Forestry, Architecture and Design, Business and Management, Economics and Econometrics, Education, Engineering and Technology, History, Philosophy, Theology, Law, Medicine and Health Sciences, Natural Sciences and Social Sciences and their 256 sub-branches is a unique service offered only by “AD Scientific Index”. You can see the most cited and influential researchers in the country and region. See also for more specific citation analyses: "last 6 years citation index" Universities Rankings 2024 (Sort by: Total Citations) and Universities Rankings 2024 (Sort by : Last 6 Years Citations)
![Gwyn Campbell](https://cdn.adscientificindex.com/pictures/b5/651752.jpg)
Indian Ocean World
Africa
Slavery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,986
1,294
0.433
![Gordon Campbell](/user/assets/images/profile/no-profile-photo.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,777
579
0.326
![Joe Campbell](https://cdn.adscientificindex.com/pictures/bd/1330793.jpg)
Free will
moral responsibility
skepticism
Hume
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,151
398
0.346
![Arthur Walzer](/user/assets/images/profile/no-profile-photo.png)
Rhetoric
history of rhetoric
Aristotle
Quintilian
Campbell
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,030
302
0.293
![Stephen Campbell](/user/assets/images/profile/no-profile-photo.png)
premodern Europe 1300-1600
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,018
329
0.323
![Mariel L Campbell|https://orcid.org/0000-0003-0536-5044](https://cdn.adscientificindex.com/pictures/a5/1528280.jpg)
Natural History Collections and Databases
Biodiversity
Mammalogy
Parasitology
Genomic Resources
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
809
338
0.418
![Stephen M Campbell](https://cdn.adscientificindex.com/pictures/10/837169.jpg)
ethical theory
bioethics
philosophy of technology
philosophy of disability
well-being
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
743
593
0.798
![Ian Campbell](/user/assets/images/profile/no-profile-photo.png)
architectural history
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
182
59
0.324
![George Campbell Gosling](https://cdn.adscientificindex.com/pictures/52/5185174.jpg)
Social History of Medicine
History of Charity
Twentieth-Century Britain
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
89
46
0.517
![Sarah Campbell](/user/assets/images/profile/no-profile-photo.png)
Northern Ireland
oral history
civil rights
social history
political history
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
36
22
0.611
![Chris Campbell](https://cdn.adscientificindex.com/pictures/64/5682338.jpg)
philosophy of science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22
22
1.000
Gwyn Campbell
McGill University
Montréal, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,986
1,294
0.433
Indian Ocean World
Africa
Slavery
Gordon Campbell
University of Leicester
Leicester, United Kingdom
![United Kingdom](/flags/gb.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,777
579
0.326
Joe Campbell
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,151
398
0.346
Free will
moral responsibility
skepticism
Hume
Arthur Walzer
University of Minnesota Twin Cities
Minneapolis, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,030
302
0.293
Rhetoric
history of rhetoric
Aristotle
Quintilian
Campbell
Stephen Campbell
Johns Hopkins University
Baltimore, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,018
329
0.323
Mariel L Campbell|https://orcid.org/0000-0003-0536-5044
University of New Mexico
Albuquerque, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
809
338
0.418
Natural History Collections and Databases
Biodiversity
Mammalogy
Parasitology
Genomic Resources
Stephen M Campbell
Bentley University
Waltham, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
743
593
0.798
ethical theory
bioethics
philosophy of technology
philosophy of disability
well-being
Ian Campbell
University of Edinburgh
Edinburgh, United Kingdom
![United Kingdom](/flags/gb.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
182
59
0.324
George Campbell Gosling
University of Wolverhampton
Wolverhampton, United Kingdom
![United Kingdom](/flags/gb.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
89
46
0.517
Social History of Medicine
History of Charity
Twentieth-Century Britain
Sarah Campbell
Newcastle University
Newcastle upon Tyne, United Kingdom
![United Kingdom](/flags/gb.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
36
22
0.611
Northern Ireland
oral history
civil rights
social history
political history
Chris Campbell
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22
22
1.000