Arina Luthfini Lubis, Nizwardi Jalinus, Rijal Abdullah. “The Importance of Need Analysis for the Development of Co-PjBL Models on the Creative Products and Entrepreneurship Subject at the Vocational Level”. International Journal of Advanced Science and Technology 29, no. 7s (April 17, 2020): 985 - 993. Accessed September 23, 2021. https://sersc.org/journals/index.php/IJAST/article/view/10110.