APA aipamena

Babbie, E. R. (2007). The practice of social research (Eleventh edition.). Thomson/Wadsworth.

Chicago Style aipamena

Babbie, Earl R. The Practice of Social Research. Eleventh edition. Australia: Thomson/Wadsworth, 2007.

MLA aipamena

Babbie, Earl R. The Practice of Social Research. Eleventh edition. Thomson/Wadsworth, 2007.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.