WILLIAMS, C. Research Methods. Journal of Business & Economics Research (JBER), [S. l.], v. 5, n. 3, 2007. DOI: 10.19030/jber.v5i3.2532. Disponível em: https://clutejournals.com/index.php/JBER/article/view/2532. Acesso em: 17 jul. 2024.