HANSEN, Lizzi S. Betaling for biblioteks- og informationsservice. Biblioteksarbejde, [S. l.], n. 37, p. 23–37, 1992. DOI: 10.7146/bibarb.v0i37.106235. Disponível em: https://tidsskrift.dk/bibarb/article/view/106235. Acesso em: 5 dec. 2025.