Wardani, Ika, and Abdul Karim Batubara. 2023. “LIBRARY SERVICE SYSTEM IN POCKET (ONLINE BOOK RESERVATION) NORTH SUMATRA PROVINCIAL LIBRARY AND ARCHIVES OFFICE”. JURTEKSI (jurnal Teknologi Dan Sistem Informasi) 9 (3), 437-44. https://doi.org/10.33330/jurteksi.v9i3.2410.