Pernoll, M. L., & Benson, R. C. (1987). Current obstetric y ginecologic diagnosis y treatment 1987.
芝加哥风格引文Pernoll, Martin L., 与 Ralph C. Benson. Current Obstetric Y Ginecologic Diagnosis Y Treatment 1987. 1987.
MLA引文Pernoll, Martin L., 与 Ralph C. Benson. Current Obstetric Y Ginecologic Diagnosis Y Treatment 1987. 1987.
警告：这些引文格式不一定是100％准确.