Dyfyniad APA

European Science Editing. European Association of Science Editors.

Dyfyniad Arddull Chicago

European Science Editing. European Association of Science Editors.

Dyfyniad MLA

European Science Editing. European Association of Science Editors.

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