Dyfyniad APA

Roger Coote. Knowledge Masters: The Earth. Young Learner Publications.

Dyfyniad Arddull Chicago

Roger Coote. Knowledge Masters: The Earth. Young Learner Publications.

Dyfyniad MLA

Roger Coote. Knowledge Masters: The Earth. Young Learner Publications.

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