Pratiwi, Amalia, and Novi Trisnawati. “Respon Siswa Terhadap Penggunaan Google Classroom Pada Mata Pelajaran OTK Humas Dan Keprotokolan”. Journal of Office Administration : Education and Practice 1, no. 1 (April 23, 2021): 28-41. Accessed May 5, 2024. https://ejournal.unesa.ac.id/index.php/joa/article/view/39291.