Cita APA

 Arny, T. (2008).  Explorations: An introduction to astronomy.  McGraw-Hill.

Chicago Style Citation

 Arny, Thomas.  Explorations: An Introduction to Astronomy.  McGraw-Hill, 2008.

Cita MLA

 Arny, Thomas.  Explorations: An Introduction to Astronomy.  McGraw-Hill, 2008.

Atenció: Aquestes cites poden no estar 100% correctes.