VELTMAN, M.; KOOIJ, R.; MARBAN, S. Sales Bottlenecks And Their Effect On Profit. Journal of Applied Business Research (JABR), [S. l.], v. 30, n. 6, p. 1725–1738, 2014. DOI: 10.19030/jabr.v30i6.8889. Disponível em: https://clutejournals.com/index.php/JABR/article/view/8889. Acesso em: 29 nov. 2023.