“Web-Based Book Borrowing Information System for the Library of Universitas Nahdlatul Ulama Sumatera Barat With QR Code and WhatsApp Notification Features”. TOFEDU: The Future of Education Journal 5, no. 3 (October 26, 2026): 5818–5822. Accessed November 2, 2026. https://journal.tofedu.or.id/index.php/journal/article/view/2364.