FIRDONSYAH, A. .; PUTRI, N. A. Meeting Room Booking System with WhatsApp Notification Feature Using Extreme Programming Methods in RS Muhammadiyah Lamongan . Sinkron : jurnal dan penelitian teknik informatika, [S. l.], v. 9, n. 3, p. 1036-1049, 2025. DOI: 10.33395/sinkron.v9i3.14927. Disponível em: https://jurnal.polgan.ac.id/index.php/sinkron/article/view/14927. Acesso em: 25 aug. 2026.