MILOSAVLJEVIĆ, Ljubica. Efficiency and Rationality of Exchange of Goods. Etnoantropološki problemi / Issues in Ethnology and Anthropology , [S. l.], v. 5, n. 2, p. 275–280, 2010. Disponível em: https://www.eap-iea.org/index.php/eap/article/view/841. Acesso em: 1 sep. 2026.