APA (7th ed.) Citation

Nardo, D. (2004). Comets and asteroids. Lucent Books.

Chicago Style (17th ed.) Citation

Nardo, Don. Comets and Asteroids. San Diego, Calif: Lucent Books, 2004.

MLA (9th ed.) Citation

Nardo, Don. Comets and Asteroids. Lucent Books, 2004.

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