BACHMANN, F.; VACULÍK, J. INSTRUMENTS FOR THE MARKETING OF SERVICES AND THEIR IMPLEMENTATION. Perner’s Contacts, [S. l.], v. 3, n. 1, p. 1–6, 2008. Disponível em: https://pernerscontacts.upce.cz/index.php/perner/article/view/1200. Acesso em: 17 kvě. 2024.