SCHÖLLHAMMER, G. Import-export. Kwartalnik Filmowy, [S. l.], n. 35-36, p. 342–346, 2001. DOI: 10.36744/kf.4139. Disponível em: https://czasopisma.ispan.pl/index.php/kf/article/view/4139. Acesso em: 13 lip. 2025.