Shostak, G. S. (2003). Cosmic company: The search for life in the universe. Cambridge,New York: Cambridge University Press.
शिकागो स्टाइल उद्धरणShostak, G. Seth. Cosmic Company: The Search for Life in the Universe. Cambridge,New York: Cambridge University Press, 2003.
एमएलए उद्धरणShostak, G. Seth. Cosmic Company: The Search for Life in the Universe. Cambridge,New York: Cambridge University Press, 2003.
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