H. Sepriandi, S. Gultom, E. Dewi Puspita Sari, S. Artamevia, E. Budhi Setiawan, and I. Chairrudin, “The Effect of Training and Work Motivation on Operator Performance During the COVID-19 Pandemic”, KSS, vol. 8, no. 9, pp. 869–876, May 2023.