Παραπομπή APA

Brown, L. R. (2009). Plan B 4.0: Mobilizing to Save Civilization (Substantially Revised). New York: W. W. Norton.

Παραπομπή Chicago Style

Brown, Lester R. Plan B 4.0: Mobilizing to Save Civilization (Substantially Revised). New York: W. W. Norton, 2009.

Παραπομπή MLA

Brown, Lester R. Plan B 4.0: Mobilizing to Save Civilization (Substantially Revised). New York: W. W. Norton, 2009.

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