Dyfyniad APA

(1999). A dictionary of science (4th ed.). New York: Oxford University Press.

Dyfyniad Arddull Chicago

A Dictionary of Science. 4th ed. New York: Oxford University Press, 1999.

Dyfyniad MLA

A Dictionary of Science. 4th ed. New York: Oxford University Press, 1999.

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