OPTIMALISASI LAYANAN HAJI DAN UMRAH MENGGUNAKAN AUTO REPLY WHATSAPP BUSINNES DI KEMENTERIAN AGAMA KABUPATEN KUANTAN SINGINGI. MB [Internet]. 2026 Jan. 2 [cited 2026 Jan. 22];2(1):1-9. Available from: https://yasiinpublisher.org/index.php/mandalabakti/article/view/82