(Ingelesez)Graham,Lawrence D. (1999).Legal battles that shaped the computer industry. Greenwood Publishing Group,175or.ISBN978-1-56720-178-9. Aipua:«Freeware, however, is generally only free in terms of price; the author typically retains all other rights, including the rights to copy, distribute, and make derivative works from the software.».
Dixon,Rod. (2004).Open source software law. Artech HouseISBN978-1-58053-719-3.(kontsulta data: 2024-11-19) Aipua:«On the other hand, freeware does not require any payment from the licensee or end-user, but it is not precisely free software, despite the fact that to an end-user the software is acquired in what appears to be an identical manner.».
(Ingelesez)Lyons,Kelly;Messinger,Paul R.;Niu,Run H.;Stroulia,Eleni. (2012).«A tale of two pricing systems for services»Information Systems and E-Business Management10(1): 19–42.doi:10.1007/s10257-010-0151-3.ISSN1617-9846..
(Ingelesez)Lyons,Kelly;Messinger,Paul R.;Niu,Run H.;Stroulia,Eleni. (2012).«A tale of two pricing systems for services»Information Systems and E-Business Management10(1): 19–42.doi:10.1007/s10257-010-0151-3.ISSN1617-9846..