Vnoučková, Lucie, and Zdeněk Linhart. “Indices Converting Resignation and Drop-Offs of Business Students to Retention”. Journal on Efficiency and Responsibility in Education and Science 13, no. 2 (June 30, 2020): 79-89. Accessed August 12, 2020. https://www.eriesjournal.com/index.php/eries/article/view/268.