BELACHEW, W. .; BARKE, H.-D. .; YITBAREK, S. . Conceptual change texts and pre-service chemistry teachers conceptual understanding of aliphatic hydrocarbon concepts. African Journal of Chemical Education, [S. l.], v. 11, n. 1, 2021. Disponível em: https://www.ajol.info/index.php/ajce/article/view/205317. Acesso em: 15 oct. 2026.