M. Albuquerque de Oliveira, M. do S. dos Santos Montoia Arrais, D. Luiz Reis, R. Kennedy Vieira, and G. de Mattos Veroneze, “Cost management in educational services: the importance of strategic cost control in educational institutions”, Int J Innov Educ Res, vol. 7, no. 10, pp. 883–893, Oct. 2019, doi: 10.31686/ijier.vol7.iss10.1837.