Dyfyniad APA

(1991). Oceans and islands: The encyclopedia of the earth. Smithmark.

Dyfyniad Arddull Chicago

Oceans and Islands: The Encyclopedia of the Earth. New York, N.Y: Smithmark, 1991.

Dyfyniad MLA

Oceans and Islands: The Encyclopedia of the Earth. Smithmark, 1991.

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