Perdana Josua. The Influence of Choice of Study Program Concentration in Undergraduate Management and Self-Efficacy on the Study Period of 2020 Students of Undergraduate Management, FEB, Riau University. Ijemr [Internet]. 2024 Dec. 30 [cited 2025 May 14];3(3):90-8. Available from: https://ijemr.asia/index.php/ijemr/article/view/365