Schaefer, R. T., & Lamm, R. P. (1997). Sociology--a brief introduction (2nd ed.). McGraw-Hill Companies.
Lua i Stíl Chicago (17ú heag.)Schaefer, Richard T., agus Robert P. Lamm. Sociology--a Brief Introduction. 2nd ed. New York: McGraw-Hill Companies, 1997.
Lua MLA (8ú heag.)Schaefer, Richard T., agus Robert P. Lamm. Sociology--a Brief Introduction. 2nd ed. McGraw-Hill Companies, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.