위키백과:퍼블릭 도메인: 두 판 사이의 차이

* [[위키백과:퍼블릭 도메인 그림 출처]]

 

* [http://www.copyright.cornell.edu/training/Hirtle_Public_Domain.htm Copyright Term and the Public Domain in the United States] by Peter Hirtle.

* [http://www.mediarights.co.uk Sound Recordings and Copyright in the UK]. A guide for those engaged in the restoration of public domain sound recordings.