Greenberg, R. (2005). Europa The Ocean Moon: Search for an Alien Biosphere. Springer Berlin Heidelberg. https://doi.org/10.1007/b138547
Chicago-čujuhus (17. p.)Greenberg, Richard. Europa The Ocean Moon: Search for an Alien Biosphere. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. https://doi.org/10.1007/b138547.
MLA-čujuhus (9. p.)Greenberg, Richard. Europa The Ocean Moon: Search for an Alien Biosphere. Springer Berlin Heidelberg, 2005. https://doi.org/10.1007/b138547.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.