Indraswari, Ratih. 2021. “Characteristics of Indonesian Adolescents Who Had Experienced Pregnancy Under the Age of 20 Years: Basic Health Research 2018”. Jurnal Promkes: The Indonesian Journal of Health Promotion and Health Education 9 (2):159-67. https://doi.org/10.20473/jpk.V9.I2.2021.159-167.