., Darwis, Slamet Riyadi, Abubakar ., Abdul Muin Sibuea, Efendi Napitupulu, and Putoro Dongoran. “Implementation of Collaborative Learning Based Onenvironmental Projects Building Solution of Students Learning Cracter for Covid-19 Pandemic Time in Padangsidimpuan City”. KnE Social Sciences 8, no. 4 (March 3, 2023): 151–157. Accessed April 25, 2024. https://knepublishing.com/index.php/KnE-Social/article/view/12894.