Carl Sagan (Vietnamese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Carl Sagan" in Vietnamese language version.

refsWebsite

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1web.archive.org

1^st place

1^st place

archive.org

Sagan, Carl (1994). Pale Blue Dot: A Vision of the Human Future in Space (ấn bản 1). New York: Random House. tr. 68. ISBN 0-679-43841-6.

google.com

Sagan, Carl. Demon-Haunted World: Science as a Candle in the Dark Lưu trữ tháng 10 3, 2022 tại Wayback Machine, Ballantine Books (1996) p. 25.

web.archive.org

Sagan, Carl. Demon-Haunted World: Science as a Candle in the Dark Lưu trữ tháng 10 3, 2022 tại Wayback Machine, Ballantine Books (1996) p. 25.