Copyleft (Polish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Copyleft" in Polish language version.

Last modified: 07:12:00, 8 July 2026 (UTC)

Ref.Un. Ref.Website

Global rank Polish rank

1,901^st place

1,582^nd place

8,844^th place

294^th place

low place

gnu.org (Global: 1,901^st place; Polish: 1,582^nd place)

Richard Stallman: About the GNU Project. Free Software Foundation, 2008-01-21. [dostęp 2008-08-23].
Richard Stallman: Czym jest copyleft?. Free Software Foundation, 2009-01-21. [dostęp 2010-01-12]. (ang.).

Rob Myers: NonCommercial Sharealike Is Not Copyleft. 2008-02-24. [dostęp 2010-01-12]. (ang.).