Rahman, Shukran Abd, Nor Diana Mohd. Mahudin, Intan Hashimah Mohd. Hashim, Zulkarnain Ahmad Hatta, Noraida Abdul Ghani, Zarina Mat Saad, and Jasni Sulong. “Item Generation and Content Validation of the Hajj Crowd Behavior (HBC) Scale”. The Journal of Behavioral Science 12, no. 2 (July 27, 2017): 19-30. Accessed October 19, 2021. https://so06.tci-thaijo.org/index.php/IJBS/article/view/89102.