NURMAYUNI, S. Layanan online Perpustakaan Perguruan Tinggi sebelum dan sesudah pandemi covid-19: Studi perpustakaan UIN Sunan Ampel sejak 2018 hingga 2020. IJAL (Indonesian Journal of Academic Librarianship), [S. l.], v. 4, n. 1, p. 23–40, 2020. Disponível em: http://journals.apptisjatim.org/index.php/ijal/article/view/85. Acesso em: 5 nov. 2025.