Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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