Has, E.M.M. et al. 2020. The Effect of Education by Using Snakes and Ladders as a Medium on Adolescents Knowledge and Attitudes in the Prevention of Premarital Sex in Junior High School. International Journal of Psychosocial Rehabilitation. 24, 7 (Sep. 2020), 9354–9359. DOI:https://doi.org/10.61841/w2z5vf09.