1.
Simbolon NN, Imsar I. Manajemen Pelayanan Haji dan Umroh di Kantor Kementerian Agama Sumatera Utara . jptam [Internet]. 2021 Dec. 10 [cited 2025 Jul. 2];5(3):8929-36. Available from: https://jptam.org/index.php/jptam/article/view/2401