Firda Fibrila, et al. “Identification of Adolescent Behavioral Tendencies After Utilization of Health Promotion Applications About Pre-Pregnancy Care Based on the Health Belief Model Framework”. Journal of Population Therapeutics and Clinical Pharmacology, vol. 30, no. 5, Mar. 2023, pp. 320-3, https://doi.org/10.47750/jptcp.2023.30.05.033.