GOSTIAN, C. D. Monitoring Instruments for Marketing Promotional Activities on the Internet Applicable in Adult’s Education Services and More. International Journal of Economic Practices and Theories, [S. l.], v. 4, n. 5, p. 856-869, 2014. Disponível em: http://ijept.eu/index.php/ijept/article/view/Monitoring_Instruments_for_Marketing_Promotional_Activities_on. Acesso em: 1 jul. 2025.