Dyfyniad APA

Acworth, B. (1955). Bird and butterfly mysteries: Realities of migration. Eyre & Spottiswoode.

Dyfyniad Arddull Chicago

Acworth, Bernard. Bird and Butterfly Mysteries: Realities of Migration. London: Eyre & Spottiswoode, 1955.

Dyfyniad MLA

Acworth, Bernard. Bird and Butterfly Mysteries: Realities of Migration. Eyre & Spottiswoode, 1955.

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