Veres, Zoltán, and Alfateh Fegada. “Impact of the Organizational Culture on the Employee’s Performance Zain Telecom As a Case Study, Khartoum-Sudan”. European Scientific Journal, ESJ 18, no. 12 (April 30, 2022): 237. Accessed April 28, 2024. https://eujournal.org/index.php/esj/article/view/15357.