Dyfyniad APA

Bulletin of the British Museum of Natural History. British Museum of Natural History.

Dyfyniad Arddull Chicago

Bulletin of the British Museum of Natural History. London: British Museum of Natural History.

Dyfyniad MLA

Bulletin of the British Museum of Natural History. British Museum of Natural History.

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