Sriprasert, I., Stanczyk, F. Z., & Archer, D. F. (2018). Ethinyl estradiol and levonorgestrel in a transdermal contraceptive delivery system.
استشهاد بنمط شيكاغوSriprasert, Intira, Frank Z. Stanczyk, و David F. Archer. Ethinyl Estradiol and Levonorgestrel in a Transdermal Contraceptive Delivery System. 2018.
MLA استشهادSriprasert, Intira, Frank Z. Stanczyk, و David F. Archer. Ethinyl Estradiol and Levonorgestrel in a Transdermal Contraceptive Delivery System. 2018.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.