Cita APA

Arny, T. T. (2004). Explorations: An introduction to astronomy. Boston, MA: McGraw-Hill.

Chicago Style Citation

Arny, Thomas T. Explorations: An Introduction to Astronomy. Boston, MA: McGraw-Hill, 2004.

Cita MLA

Arny, Thomas T. Explorations: An Introduction to Astronomy. Boston, MA: McGraw-Hill, 2004.

Atenció: Aquestes cites poden no estar 100% correctes.