Dyfyniad APA

Liddle, A. (2003). An introduction to modern cosmology. Great Britain: Wiley.

Dyfyniad Arddull Chicago

Liddle, Andrew. An Introduction to Modern Cosmology. Great Britain: Wiley, 2003.

Dyfyniad MLA

Liddle, Andrew. An Introduction to Modern Cosmology. Great Britain: Wiley, 2003.

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