Dyfyniad APA

Lewis, J. S. (1984). Planets and their atmospheres: Origin and evolution. Academic Press.

Dyfyniad Arddull Chicago

Lewis, John S. Planets and Their Atmospheres: Origin and Evolution. Orlando: Academic Press, 1984.

Dyfyniad MLA

Lewis, John S. Planets and Their Atmospheres: Origin and Evolution. Academic Press, 1984.

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