Yahia Awajan, Khaleel, and Nurnadiah Zamri. “A Fuzzy TOPSIS With Z-Numbers Method for Assessment on Memorandum of Understanding at University”. International Journal of Engineering & Technology, vol. 7, no. 3.28, Aug. 2018, pp. 149-52, https://doi.org/10.14419/ijet.v7i3.28.24684.