Cita APA

Heidmann, J. (1995). Extraterrestrial intelligence. Cambridge: Cambridge University Press.

Chicago Style Citation

Heidmann, Jean. Extraterrestrial Intelligence. Cambridge: Cambridge University Press, 1995.

Cita MLA

Heidmann, Jean. Extraterrestrial Intelligence. Cambridge: Cambridge University Press, 1995.

Atenció: Aquestes cites poden no estar 100% correctes.