OSMAN, P. Barton Biggs: Hedgehogging, John Wiley & Sons, 2006. Marketing & Menedzsment, [S. l.], v. 40, n. 5-6, p. 155–156, 2019. Disponível em: https://journals.lib.pte.hu/index.php/mm/article/view/702. Acesso em: 26 ápr. 2024.