If the submission includes content from Wikipedia, it should have the same license, which is the Creative Commons Attribution-Share alike 3.0 Unported license (CC-BY-SA 3.0).
For submissions which are the own work of authors, the recommended license of this journal is the Creative Commons Attribution 4.0 International license (CC BY 4.0).
Authors may also request a compatible license. A list of compatible licenses are found at
wikipedia.org/wiki/WP:COMPAT