Nelwatri, Helpi. “Preventive Efforts of Youth Reproductive Health Problems Through Informative Media: Health Reproductive Pocket Book Based on Local Culture for Parents in Lima Puluh Kota Regency, West Sumatera Province”. Science and Environmental Journal for Postgraduate 1, no. 1 (December 26, 2018): 37-42. Accessed April 16, 2024. http://senjop.ppj.unp.ac.id/index.php/senjop/article/view/11.