APA citiranje

Arny, T. T., & Thomas T. Arny. (2008). Explorations: An introduction to astronomy. New York, NY: McGraw-Hill.

Trích dẫn kiểu Chicago

Arny, Thomas T., và Thomas T. Arny. Explorations: An Introduction to Astronomy. New York, NY: McGraw-Hill, 2008.

MLA citiranje

Arny, Thomas T., và Thomas T. Arny. Explorations: An Introduction to Astronomy. New York, NY: McGraw-Hill, 2008.