APA (7th ed.) Citation

Holt, G. (2011). Astronomy (Rev. 2nd ed.). National Science Teachers Association.

Chicago Style (17th ed.) Citation

Holt, Geoff. Astronomy. Rev. 2nd ed. Arlington, Va: National Science Teachers Association, 2011.

MLA (9th ed.) Citation

Holt, Geoff. Astronomy. Rev. 2nd ed. National Science Teachers Association, 2011.