Karl Saqan: Redaktələr arasındakı fərq

* «Elm tanrı axtarışında» ({{lang-en|The Varieties of Scientific Experience: A Personal View of the Search for God}}), К. Sаqan E.Druynanın redaksiyası ilə, 1985 mühhazirə Gifford, Penguin Press HC, noyabr 2006, ISBN 1-59420-107-2, 304 səh

 

* {{Cite book | title=Carl Sagan: A Life | last=Davidson | first=Keay | pages=33–41 | location=New York | publisher=John Wiley & Sons | year=1999 | isbn=0-471-25286-7}}

* {{Cite book | title=Conversations with Carl Sagan | last=Head | first=Tom (ed.) | location=Jackson, Mississippi | publisher=University Press of Mississippi | year=2005 | isbn=1-57806-736-7}}

* {{Cite journal|last=Morrison |first=David |year=2006 |title=Carl Sagan: The People's Astronomer |work=AmeriQuests |volume=3 |issue=2 |url=http://ejournals.library.vanderbilt.edu/ameriquests/include/getdoc.php?id=402&article=93&mode=pdf |format=PDF}}

* {{Cite book|last=Achenbach |first=Joel |year=1999 |title=Captured by Aliens: the search for life and truth in a very large universe |location=New York |publisher=Simon & Schuster |isbn=0-684-84856-2 |laysummary=Includes detailed account of Sagan's role in the search for extraterrestrial life.}}

==Xarici keçidlər==

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