Cita APA (7th ed.)
Basalla, G. (2006). Civilized life in the universe: Scientists on intelligent extraterrestrials. Oxford University Press.
Cita Chicago (17th ed.)
Basalla, George. Civilized Life in the Universe: Scientists on Intelligent Extraterrestrials. Oxford ; New York: Oxford University Press, 2006.
Cita MLA (9th ed.)
Basalla, George. Civilized Life in the Universe: Scientists on Intelligent Extraterrestrials. Oxford University Press, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.