Arnellis, A., Jamaan, E., Nasution, M. and Ahmad, D. 2018. OLYMPIAD MATERIAL DEVELOPMENT FOR IMPROVING OF TEACHER PROFESSIONALISM MGMP SMP REGENCY OF AGAM WEST REGION. Pelita Eksakta. 1, 1 (Mar. 2018), 43-46. DOI:https://doi.org/10.24036/pelitaeksakta/vol1-iss1/13.