Dyfyniad APA

Allen, F. L. (1997). Only yesterday: An informal history of the 1920's. Wiley.

Dyfyniad Arddull Chicago

Allen, Frederick Lewis. Only Yesterday: An Informal History of the 1920's. New York: Wiley, 1997.

Dyfyniad MLA

Allen, Frederick Lewis. Only Yesterday: An Informal History of the 1920's. Wiley, 1997.

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