Ulianas, A., Azhar, M., Yusmaita, E., Khair, M., Fitria, Y., Parbuntari, H., Dehistora, W., & Liza, Y. (2020). Guidance on Writing Proposals and Carrying Out Classroom Action Research (PTK) and Making PTK Reports in Article Form For High School Chemistry Teachers in Bukittinggi City. Pelita Eksakta, 3(2), 129-135. https://doi.org/10.24036/pelitaeksakta/vol3-iss2/122