Cita APA (7a ed.)

Chaisson, E., & McMillan, S. (2015). Astronomy today (Eighth, global edition.). Pearson Education Limited.

Cita Chicago Style (17a ed.)

Chaisson, Eric, y Steve McMillan. Astronomy Today. Eighth, global edition. Boston: Pearson Education Limited, 2015.

Cita MLA (8a ed.)

Chaisson, Eric, y Steve McMillan. Astronomy Today. Eighth, global edition. Pearson Education Limited, 2015.