Ahmad, Widad. 2020. “Dampak Promosi Dan Harga Terhadap Keputusan Pembelian Paket Haji Dan Umrah PT Al Ikhlas Wisata Mandiri, 2019”. Study of Scientific and Behavioral Management (SSBM) 4 (1). https://journal.uin-alauddin.ac.id/index.php/ssbm/article/view/16461.