ORZEŁ-NOWAK, Anita; WCISŁO, Anna. Blood as a priceless gift – students of Cracow universities and honorary blood donation. Nursing in the 21st Century, Lublin, Poland, v. 10, n. 2(35), p. 61–68, 2011. Disponível em: https://czasopisma.umlub.pl/piel21w/article/view/2652. Acesso em: 8 jun. 2025.