Aziz, R.C. , Kosnin, R. , Hashim, N.A.A.N. , Abdullah, F.A. , Saidin, S.S. , Zulkefli, N.S. and Bakar, N.A. 2021. Student Motivation in Outdoor Recreation Engagement: Examining the Validity and Reliability of the Measuring Instruments. The journal of contemporary issues in business and government. 27, 2 (Apr. 2021), 4723–4731.