Shepard, J. M. (2002). Sociology (8th ed.). Wadsworth/Thomson Learning.
Chicago Style aipamenaShepard, Jon M. Sociology. 8th ed. Belmont, CA: Wadsworth/Thomson Learning, 2002.
MLA aipamenaShepard, Jon M. Sociology. 8th ed. Wadsworth/Thomson Learning, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.