Faryanti, Faryanti, et al. “Geography Learning Innovation: Google Sites-Based Flipped Classroom Media to Sharpen Critical Thinking Skills: Inovasi Pembelajaran Geografi: Media Flipped Classroom Berbasis Google Sites Untuk Mengasah Keterampilan Berpikir Kritis”. Journal of Vocational Education and Information Technology (JVEIT), vol. 6, no. 2, Dec. 2025, pp. 56-67, https://ejournal.undhari.ac.id/index.php/jveit/article/view/1984.