APA (7th ed.) Citation

Littmann, M. (1988). Planets beyond: Discovering the outer solar system. Wiley.

Chicago Style (17th ed.) Citation

Littmann, Mark. Planets Beyond: Discovering the Outer Solar System. New York [u.a.]: Wiley, 1988.

MLA (9th ed.) Citation

Littmann, Mark. Planets Beyond: Discovering the Outer Solar System. Wiley, 1988.

Warning: These citations may not always be 100% accurate.