WARZECHA, Alina. Loyalty of Employee and Loyalty of Client on the Example of Enterprises of Multi-level Marketing (MLM). Edukacja Ekonomistów i Menedżerów, [S. l.], v. 23, n. 1, p. 62–84, 2012. DOI: 10.5604/01.3001.0009.5770. Disponível em: https://econjournals.sgh.waw.pl/EEiM/article/view/1541. Acesso em: 3 lip. 2024.