Pangemanan, Tjerie, Joshua Ebenazher Hutabarat, Nazril Alhafid Damopolii, Syeriel Vioneta Lompoliu, and Chessy C. Kapahang. 2026. “Implementation of a Quality Management System in E-Learning Services: A Case Study of Google Classroom”. Cerdika: Jurnal Ilmiah Indonesia 6 (3):1129-36. https://doi.org/10.59141/cerdika.v6i3.3390.