APA (7th ed.) Citation

Chaisson, E., & McMillan, S. (2011). Astronomy today (7th ed.). Addison-Wesley.

Chicago Style (17th ed.) Citation

Chaisson, Eric, and Stephen McMillan. Astronomy Today. 7th ed. Boston [etc.]: Addison-Wesley, 2011.

MLA (9th ed.) Citation

Chaisson, Eric, and Stephen McMillan. Astronomy Today. 7th ed. Addison-Wesley, 2011.

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