APA aipamena

BABBIE. (1973). Survey Research Methods Babbie. Wadsworth.

Chicago Style aipamena

BABBIE. Survey Research Methods Babbie. Wadsworth, 1973.

MLA aipamena

BABBIE. Survey Research Methods Babbie. Wadsworth, 1973.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.