Saragih, Sri Misleini. “The Relationship Between Parents’ Parenting Patterns and Smoking Incidents in Adolescents at SMP Negeri 4 Pekan Tolan, Kampung Rakyat District, South Labuhanbatu Regency in 2018”. Science Midwifery, vol. 9, no. 1, Oktober, Nov. 2020, pp. 140-3, https://www.midwifery.iocspublisher.org/index.php/midwifery/article/view/54.