LAYANAN REFERENSI VIRTUAL DI PERPUSTAKAAN MELALUI MEDIA SOSIAL WHATSAPP. Edulib : journal of library and information science, [S. l.], v. 10, n. 2, p. 228–239, 2020. DOI: 10.17509/edulib.v10i2.26822. Disponível em: https://ejournal-education.upi.edu/edulib/article/view/1001. Acesso em: 1 oct. 2026.