Dyfyniad APA

University of Rhode Isla. Graduate School of Oceanography.

Dyfyniad Arddull Chicago

University of Rhode Isla. Graduate School of Oceanography.

Dyfyniad MLA

University of Rhode Isla. Graduate School of Oceanography.

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