APA aipamena

Babbie, E. R. (2007). The practice of social research (11th ed.). Belmont, CA: Thomson Wadsworth.

Chicago Style aipamena

Babbie, Earl R. The Practice of Social Research. 11th ed. Belmont, CA: Thomson Wadsworth, 2007.

MLA aipamena

Babbie, Earl R. The Practice of Social Research. 11th ed. Belmont, CA: Thomson Wadsworth, 2007.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.