APA-viite (7. p.)
Ulmschneider, P. (2006). Intelligent Life in the Universe: Principles and Requirements Behind Its Emergence (Second Edition.). Springer Berlin Heidelberg. https://doi.org/10.1007/3-540-32838-6
Chicago-viite (17. p.)
Ulmschneider, Peter. Intelligent Life in the Universe: Principles and Requirements Behind Its Emergence. Second Edition. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. https://doi.org/10.1007/3-540-32838-6.
MLA-viite (9. p.)
Ulmschneider, Peter. Intelligent Life in the Universe: Principles and Requirements Behind Its Emergence. Second Edition. Springer Berlin Heidelberg, 2006. https://doi.org/10.1007/3-540-32838-6.
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