Usul, Hayrettin, Nuri Ömürbek, and Mustafa Zihni Tunca. “Process-Oriented Performance Assessment of Online Learning During The Covid-19 Pandemic”. European Journal of Digital Economy Research 3, no. 2 (December 15, 2022): 53-58. Accessed May 9, 2024. https://ejderhub.com/index.php/ejder/article/view/65.