Harahap, R. P., N. Manalu, S. Siregar, and I. Kasih. “Evaluation of Limited Face-Face Pens Learning Readiness at State High School Level in Labuhanbatu District”. Randwick International of Social Science Journal, Vol. 4, no. 2, Apr. 2023, pp. 449-5, doi:10.47175/rissj.v4i2.685.