Pernoll, M. L., & Benson, R. C. (1987). Current obstetric y ginecologic diagnosis y treatment 1987. Appleton y lange.
Lua i Stíl Chicago (17ú heag.)Pernoll, Martin L., agus Ralph C. Benson. Current Obstetric Y Ginecologic Diagnosis Y Treatment 1987. California: Appleton y lange, 1987.
Lua MLA (9ú heag.)Pernoll, Martin L., agus Ralph C. Benson. Current Obstetric Y Ginecologic Diagnosis Y Treatment 1987. Appleton y lange, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.