ONG, Eng Tek. The effects of an in-service professional development course on Acehnese science teachers’ perceived pedagogical knowledge and skills. Journal of Research, Policy & Practice of Teachers and Teacher Education, [S. l.], v. 3, n. 2, p. 5–16, 2018. Disponível em: https://ejournal.upsi.edu.my/index.php/JRPPTTE/article/view/169. Acesso em: 14 may. 2025.