Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

Pernoll, Martin L., i Ralph C. Benson. Current Obstetric Y Ginecologic Diagnosis Y Treatment 1987. 1987.

Cita MLA (9th ed.)

Pernoll, Martin L., i Ralph C. Benson. Current Obstetric Y Ginecologic Diagnosis Y Treatment 1987. 1987.