Cunningham, f. g. (2010). Williams Obstetrics. McGraw-Hill Book Company.
Chicago Style aipamenaCunningham, f. gary. Williams Obstetrics. McGraw-Hill Book Company, 2010.
MLA aipamenaCunningham, f. gary. Williams Obstetrics. McGraw-Hill Book Company, 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.