KONOPKA, M. O kalendarzach dwudziestolecia międzywojennego. AUPC Studia ad Bibliothecarum Scientiam Pertinentia, [S. l.], v. 2, p. 325–328, 2003. Disponível em: https://sbsp.uken.krakow.pl/article/view/1049. Acesso em: 2 maj. 2024.