RICHEY, Jeremiah; KANG, Bohyeon. Multi - Level Marketing: An Economic Model. Indian Journal of Marketing, [S. l.], v. 45, n. 4, p. 7–16, 2015. DOI: 10.17010/ijom/2015/v45/i4/79956. Disponível em: https://indianjournalofmarketing.com/index.php/ijom/article/view/79956. Acesso em: 9 oct. 2025.