Damanik, Elsarika. “Factors Related To The Use Of Contraceptional Equipment In Couples Of Reporting Age In The Village Pematang Biara Kecamatan Pantai Labu, Kabupaten Deli Serdang”. Science Midwifery 10, no. 1, October (October 30, 2021): 568–575. Accessed June 13, 2026. https://www.midwifery.iocspublisher.org/index.php/midwifery/article/view/324.