Dyfyniad APA

Anon. (2019). "Illustrated Family Encyclopedia Volume 11 O-P Ocean Wildlife to Portugal, History of". Dorling Kinderlsey.

Dyfyniad Arddull Chicago

Anon. "Illustrated Family Encyclopedia Volume 11 O-P Ocean Wildlife to Portugal, History of". Dorling Kinderlsey, 2019.

Dyfyniad MLA

Anon. "Illustrated Family Encyclopedia Volume 11 O-P Ocean Wildlife to Portugal, History of". Dorling Kinderlsey, 2019.

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