Persell, C. H. (1987). Understanding society: An introduction to sociology (2nd ed.). Harper & Row.
Lua i Stíl Chicago (17ú heag.)Persell, Caroline Hodges. Understanding Society: An Introduction to Sociology. 2nd ed. New York: Harper & Row, 1987.
Lua MLA (9ú heag.)Persell, Caroline Hodges. Understanding Society: An Introduction to Sociology. 2nd ed. Harper & Row, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.