OKEH UM. Two Factor Analysis of Variance and Dummy Variable Multiple Regression Models. Global Journal of Science Frontier Research, [S. l.], v. 14, n. F6, p. 41–55, 2014. Disponível em: https://journalofscience.org/index.php/GJSFR/article/view/1430. Acesso em: 6 may. 2024.