Dyfyniad APA

(1993). Oxford illustrated encyclopedia: Vol.8 - The universe. New York: Oxford Univ. Press.

Dyfyniad Arddull Chicago

Oxford Illustrated Encyclopedia: Vol.8 - The Universe. New York: Oxford Univ. Press, 1993.

Dyfyniad MLA

Oxford Illustrated Encyclopedia: Vol.8 - The Universe. New York: Oxford Univ. Press, 1993.

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