W. N. H. W. Mokhtar, S. A. Noordin, D. M. Hashim, and N. Shaifuddin, “Users Satisfactions Measurement and Evaluation at the Academic Libraries”, Jour. Inform. Math. Sci., vol. 9, no. 4, pp. 1021–1027, Dec. 2017, doi: 10.26713/jims.v9i4.984.