PLISZKA, Mieczysław. Genesis and development of courier service market in Poland. Bulletin of Geography. Socio-economic Series, [S. l.], n. 2, p. 77–83, 2003. DOI: 10.1515/2526. Disponível em: https://apcz.umk.pl/BGSS/article/view/2526. Acesso em: 22 feb. 2025.