Deri Yardiansyah, Soleh A, Herlina Y. Opportunities And Challenges For Security Education And Training Companies Case Study : PT. Doa Group Indonesia. J. Ekon. Manaj. Bisn. Akunt. [Internet]. 2025 Jun. 21 [cited 2025 Oct. 27];2(1):21-8. Available from: http://jurnalunived.com/index.php/EMBA/article/view/728