Aziz, Azlisham Abdul, et al. “Application Rasch Model in Determining The Validity And Reliability Of The Malaysian Armed Forces Spiritual Assessment Instrument: A Pilot Analysis”. CENTRAL ASIA AND THE CAUCASUS, vol. 23, no. 1, Jan. 2022, pp. 1587-02, https://ca-c.org/index.php/cac/article/view/232.