Dyfyniad APA

Ursus. International Association for Bear Research and Management.

Dyfyniad Arddull Chicago

Ursus. International Association for Bear Research and Management.

Dyfyniad MLA

Ursus. International Association for Bear Research and Management.

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