KRUPA, Marcin. Research Methods in Polemology. Krakow Review of Economics and Management/Zeszyty Naukowe Uniwersytetu Ekonomicznego w Krakowie, Krakow, n. 903, p. 17–34, 2015. DOI: 10.15678/krem.825. Disponível em: https://aoc.uek.krakow.pl/index.php/krem/article/view/825.. Acesso em: 20 sep. 2024.