Arief Rahman Yusuf. “Implementation of Online STEM-PjBL through Various Learning Platforms in Vocational High Schools During Covid-19 Pandemic”. Elementary Education Online 20, no. 2 (December 15, 2023): 1–8. Accessed June 3, 2024. https://ilkogretim-online.org/index.php/pub/article/view/2741.