Hidayat, Sopan, and Rizka Donny Agung Saputra. “Validation of a Google Sites-Based LMS Evaluation Instrument With the Importance Performance Analysis Approach in Sustainable Learning”. Jurnal Penelitian Pendidikan IPA 11, no. 11 (November 25, 2025): 317–322. Accessed December 13, 2025. https://jppipa.unram.ac.id/index.php/jppipa/article/view/12901.