Citazione Stile APA (7a Edizione)

Pernoll, M. L., & Benson, R. C. (1987). Current obstetric y ginecologic diagnosis y treatment 1987. Appleton y lange.

Citazione stile Chigago Style (17a edizione)

Pernoll, Martin L., e Ralph C. Benson. Current Obstetric Y Ginecologic Diagnosis Y Treatment 1987. California: Appleton y lange, 1987.

Citatione MLA (9a ed.)

Pernoll, Martin L., e Ralph C. Benson. Current Obstetric Y Ginecologic Diagnosis Y Treatment 1987. Appleton y lange, 1987.