Shapiro, R. (1999). Planetary dreams: The quest to discover life beyond earth. John Wiley.
Chicago Edition CitationShapiro, Robert. Planetary Dreams: The Quest to Discover Life Beyond Earth. New York: John Wiley, 1999.
Cita MLAShapiro, Robert. Planetary Dreams: The Quest to Discover Life Beyond Earth. John Wiley, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.