APA (7th ed.) Citation

Wilford, J. N. (1990). Mars beckons: The mysteries, the challenges, the expectations of our next great adventure in space. Knopf.

Chicago Style (17th ed.) Citation

Wilford, John Noble. Mars Beckons: The Mysteries, the Challenges, the Expectations of Our Next Great Adventure in Space. New York: Knopf, 1990.

MLA (9th ed.) Citation

Wilford, John Noble. Mars Beckons: The Mysteries, the Challenges, the Expectations of Our Next Great Adventure in Space. Knopf, 1990.