Harahap, Ruliansyah Putra, Nimrot Manalu, Samsuddin Siregar, and Indra Kasih. “Evaluation of Limited Face-Face Pens Learning Readiness at State High School Level in Labuhanbatu District”. Randwick International of Social Science Journal 4, no. 2 (April 30, 2023): 449-459. Accessed October 25, 2026. https://www.randwickresearch.com/index.php/rissj/article/view/685.