Babbie, E. R. (1977). Society by agreement: An introduction to sociology. Wadsworth Pub.
Lua i Stíl Chicago (17ú heag.)Babbie, Earl R. Society by Agreement: An Introduction to Sociology. Belmont, Calif: Wadsworth Pub, 1977.
Lua MLA (9ú heag.)Babbie, Earl R. Society by Agreement: An Introduction to Sociology. Wadsworth Pub, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.