Dyfyniad APA

Perse, S. J. (1966). BIrds Tr by Robert Fitzgerald. Bollingen Foundations.

Dyfyniad Arddull Chicago

Perse, St. John. BIrds Tr by Robert Fitzgerald. New York: Bollingen Foundations, 1966.

Dyfyniad MLA

Perse, St. John. BIrds Tr by Robert Fitzgerald. Bollingen Foundations, 1966.

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