IPPOLDT, L. Badania ankietowe w pracy bibliologa. AUPC Studia ad Bibliothecarum Scientiam Pertinentia, [S. l.], v. 6, p. 122–127, 2008. Disponível em: https://sbsp.uken.krakow.pl/article/view/878. Acesso em: 21 lis. 2024.