APA (7e ed.) Bronvermelding

OBSTETRICS AND GYNECOLOGY.., LING, F. W. [., & DUFF, P. [. (2001). Obstetrics and gynecology: Principles for practices. McGraw-Hill.

Chicago (17e ed.) Bronvermelding

OBSTETRICS AND GYNECOLOGY.., Frank W. [ed] LING, en Patrick [ed] DUFF. Obstetrics and Gynecology: Principles for Practices. New York: McGraw-Hill, 2001.

MLA (9e ed.) Bronvermelding

OBSTETRICS AND GYNECOLOGY.., et al. Obstetrics and Gynecology: Principles for Practices. McGraw-Hill, 2001.