TRUSZCZYŃSKA, A. An analysis of music festival customers in Poland in 2018-2019. Research Papers in Economics and Finance, [S. l.], v. 4, n. 4, p. 39–48, 2021. DOI: 10.18559/ref.2020.4.4. Disponível em: https://journals.ue.poznan.pl/REF/article/view/114. Acesso em: 5 may. 2024.