APA aipamena

BABBIE, E. (2008). The Basics of social research. Thomson.

Chicago Style aipamena

BABBIE, Earl. The Basics of Social Research. Thomson, 2008.

MLA aipamena

BABBIE, Earl. The Basics of Social Research. Thomson, 2008.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.