ebrary, Inc, Impey, C., Spitz, A. H., & Stoeger, W. R. (2013). Encountering life in the universe: Ethical foundations and social implications of astrobiology. University of Arizona Press.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)ebrary, Inc, Chris Impey, Anna H. Spitz, ба William R. Stoeger. Encountering Life in the Universe: Ethical Foundations and Social Implications of Astrobiology. Tucson: University of Arizona Press, 2013.
MLA -ийн эшлэл (9 дэх хэвлэлт)ebrary, Inc, et al. Encountering Life in the Universe: Ethical Foundations and Social Implications of Astrobiology. University of Arizona Press, 2013.
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