Kamkwis, Markus Zira. 2019. “Change in the Behaviours of Learners in Adamawa State Secondary Schools Due to Teenage Pregnancy: An Opinion Study from Teachers’ Point of View, Nigeria”. The International Journal of Humanities & Social Studies 7 (8). https://doi.org/10.24940/theijhss/2019/v7/i8/HS1908-034.