APA aipamena

Cunningham, f. g. (2005). williams obstetrics 22 nd edition. McGraw-Hill Book Company.

Chicago Style aipamena

Cunningham, f. gary. Williams Obstetrics 22 Nd Edition. McGraw-Hill Book Company, 2005.

MLA aipamena

Cunningham, f. gary. Williams Obstetrics 22 Nd Edition. McGraw-Hill Book Company, 2005.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.