Pongkendek, J. J., D. N. Marpaung, D. S. Ahmar, and S. Rahmatia. “The Professional Competence Analysis of Chemistry Teacher of Senior High School in Merauke”. Journal of Applied Science, Engineering, Technology, and Education, Vol. 3, no. 1, Mar. 2021, pp. 46-52, doi:10.35877/454RI.asci103.