Shumba, Overson, and Royda Kampamba. “Mainstreaming ESD into Science Teacher Education Courses: A Case for ESD Pedagogical Content Knowledge and Learning As Connection”. Southern African Journal of Environmental Education 29 (September 17, 2015): 151–166. Accessed September 8, 2026. https://www.ajol.info/index.php/sajee/article/view/122267.