Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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