Oyedele, O.A., S.C.D Wright, and T.M.M Maja. “Prevention of Teenage Pregnancies in Soshanguve, South Africa : Using the Johnson Behavioural System Model”. Africa Journal of Nursing and Midwifery 15, no. 1 (2013): 95–108. Accessed July 3, 2024. https://unisapressjournals.co.za/index.php/AJNM/article/view/14551.