Oktavia, B., A. Fauzi, R. Zainul, and F. Kamal. “THE USE OF SIGIL SOFTWARE IN THE DEVELOPMENT OF GUIDED DISCOVERY LEARNING-BASED E-MODULES FOR TEACHERS OF CHEMICAL MGMP PADANG PANJANG”. Pelita Eksakta, Vol. 5, no. 2, Nov. 2022, pp. 76-82, doi:10.24036/pelitaeksakta/vol5-iss1/180.