Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.