Cohen, P. S. (1968). Modern social theory. Heinemann.
Lua i Stíl Chicago (17ú heag.)Cohen, Percy S. Modern Social Theory. London: Heinemann, 1968.
Lua MLA (9ú heag.)Cohen, Percy S. Modern Social Theory. Heinemann, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.