Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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