Siti Noor Kamariah Yaakop, et al. “VALIDITY AND RELIABILITY THE INSTRUMENT OF MODEL KEUSAHAWANAN PELAJAR UNIKL (KPU) USING THE RASCH MEASUREMENT MODEL”. Marine Frontier, vol. 11, no. 2, Nov. 2020, pp. 65-69, https://ejournal.unikl.edu.my/index.php/mf/article/view/394.