Khác biệt giữa bản sửa đổi của “Carl Sagan”

* ''[[The Varieties of Scientific Experience: A Personal View of the Search for God]]'', Carl Sagan (writer) & Ann Druyan (editor), 1985 [[Gifford lectures]], Penguin Press HC, November 2006, ISBN 1-59420-107-2, 304 pgs

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==Đọc thêm==

* {{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.}}

 

[[ar:كارل ساغان]]