Dyfyniad APA

Campbell, B. (1977). Birds of coast and sea: Britain and North Europe. Oxford University.

Dyfyniad Arddull Chicago

Campbell, Bruce. Birds of Coast and Sea: Britain and North Europe. Toronto: Oxford University, 1977.

Dyfyniad MLA

Campbell, Bruce. Birds of Coast and Sea: Britain and North Europe. Oxford University, 1977.

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