שינויים

* Schult, Jeff (April 1996). "[http://tftb.com/sagan.html The Case for Science]". American Reporter.

* Schult, Jeff (April 1996). "[http://tftb.com/sagan.html The Case for Science]". American Reporter.

* [https://qz.com/959775/carl-sagans-baloney-detection-kit-can-help-you-spot-fake-news-and-weaponized-lies/ Lie-proof your life with Carl Sagan’s “baloney detection” checklist] April 14, 2017

* [https://qz.com/959775/carl-sagans-baloney-detection-kit-can-help-you-spot-fake-news-and-weaponized-lies/ Lie-proof your life with Carl Sagan’s “baloney detection” checklist] April 14, 2017

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