Παραπομπή APA

Feinberg, G., & Shapiro, R. (1980). Life beyond earth: The intelligent Earthling's guide to life in the universe. New York: William Morrow.

Παραπομπή Chicago Style

Feinberg, Gerald, and Robert Shapiro. Life Beyond Earth: The Intelligent Earthling's Guide to Life in the Universe. New York: William Morrow, 1980.

Παραπομπή MLA

Feinberg, Gerald, and Robert Shapiro. Life Beyond Earth: The Intelligent Earthling's Guide to Life in the Universe. New York: William Morrow, 1980.

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