APA (7th ed.) Citation

Duignan, B. (2010). The 100 most influential philosophers of all time. Britannica Educational Publishing in association with Rosen Educational Services.

Chicago Style (17th ed.) Citation

Duignan, Brian. The 100 Most Influential Philosophers of All Time. New York: Britannica Educational Publishing in association with Rosen Educational Services, 2010.

MLA (9th ed.) Citation

Duignan, Brian. The 100 Most Influential Philosophers of All Time. Britannica Educational Publishing in association with Rosen Educational Services, 2010.