R. H. Riandarini, U. Sumarwan, K. Kirbrandoko, and L. Noor, “Attribute Perception Mapping Services Domestic Airlines Using Correspondence Analysis”, Int. res. j. bus. stud., vol. 8, no. 1, pp. 59–67, Apr. 2015, doi: 10.21632/irjbs.8.1.59-67.