OKTAVIA, B.; FAUZI, A.; ZAINUL, R.; KAMAL, F. THE USE OF SIGIL SOFTWARE IN THE DEVELOPMENT OF GUIDED DISCOVERY LEARNING-BASED E-MODULES FOR TEACHERS OF CHEMICAL MGMP PADANG PANJANG. Pelita Eksakta, v. 5, n. 2, p. 76-82, 30 nov. 2022.