M. L. G. D. Crisologo, E. R. . Sarreal, and M. R. . Tanpoco, “Factors Contributing to Business Failure and Eventual Exit among Selected Tutorial Service Centers”, Int. J. Multidiscip. Appl. Bus. Edu. Res., vol. 5, no. 1, pp. 150–160, Jan. 2024, doi: 10.11594/ijmaber.05.01.15.