Implementation of a Quality Management System in E-Learning Services: A Case Study of Google Classroom. - Pangemanan, Tjerie; Hutabarat, Joshua Ebenazher; Damopolii, Nazril Alhafid; Lompoliu, Syeriel Vioneta; Kapahang, Chessy C. (Cerdika: Jurnal Ilmiah Indonesia, 2026)