Dyfyniad APA

(1963). Symposium on speciation in the sea. The Systematics Association.

Dyfyniad Arddull Chicago

Symposium on Speciation in the Sea. London: The Systematics Association, 1963.

Dyfyniad MLA

Symposium on Speciation in the Sea. The Systematics Association, 1963.

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