Simangunsong, Junus, and Langgeng Purnomo. “An Evaluation of the Petty Officer Training Program of the Republic of Indonesia Police Using the Kirkpatrick Model”. REID (Research and Evaluation in Education) 7, no. 2 (December 30, 2021): 88–105. Accessed May 10, 2025. https://journal.uny.ac.id/index.php/reid/article/view/36937.