Greenberg, R. (2005). Europa The Ocean Moon: Search for an Alien Biosphere. Springer Berlin Heidelberg. https://doi.org/10.1007/b138547
Lua i Stíl Chicago (17ú heag.)Greenberg, Richard. Europa The Ocean Moon: Search for an Alien Biosphere. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. https://doi.org/10.1007/b138547.
Lua MLA (9ú heag.)Greenberg, Richard. Europa The Ocean Moon: Search for an Alien Biosphere. Springer Berlin Heidelberg, 2005. https://doi.org/10.1007/b138547.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.