LEWANDOWSKA, Hanna. Hotel Services Outsourcing in Public Entities of Health Care Sector. Polish Journal of Public Health, Lublin, Poland, v. 119, n. 4, p. 355–359, 2009. Disponível em: https://czasopisma.umlub.pl/pjph/article/view/2305. Acesso em: 31 aug. 2025.