Najahudin, L., and Siti Noorbiah, M.R. “Analisis Profil Pelaburan Emas Di Malaysia Menggunakan Model Persons-Items Distribution Map (PIDM) Rasch: Profile Analysis of Gold Investment in Malaysia Using the Rasch Persons-Items Distribution Map (PIDM) Model”. Global Journal Al-Thaqafah, Aug. 2024, pp. 114-9, doi:10.7187/GJATSI2020-13.