Mosher, W. D., & Pratt, W. F. (1990). Use of contraception and family planning services in the United States, 1988.
استشهاد بنمط شيكاغوMosher, W D., و W F. Pratt. Use of Contraception and Family Planning Services in the United States, 1988. 1990.
MLA استشهادMosher, W D., و W F. Pratt. Use of Contraception and Family Planning Services in the United States, 1988. 1990.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.