APA aipamena

Clayton, S. G. (1975). Obstetrics (12th ed.). ELBS.

Chicago Style aipamena

Clayton, Stanley G. Obstetrics. 12th ed. ELBS, 1975.

MLA aipamena

Clayton, Stanley G. Obstetrics. 12th ed. ELBS, 1975.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.