ebrary, Inc, & Parnell, A. M. (1989). Contraceptive use and controlled fertility: Health issues for women and children : background papers. National Academy Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)ebrary, Inc, و Allan M. Parnell. Contraceptive Use and Controlled Fertility: Health Issues for Women and Children : Background Papers. Washington, D.C.: National Academy Press, 1989.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)ebrary, Inc, و Allan M. Parnell. Contraceptive Use and Controlled Fertility: Health Issues for Women and Children : Background Papers. National Academy Press, 1989.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.