Dyfyniad APA

Bliven, B. (1950). Twentieth century unlimited, from the vantage point of the first fifty years. New York: J. B. Lippincott Company.

Dyfyniad Arddull Chicago

Bliven, Bruce. Twentieth Century Unlimited, From the Vantage Point of the First Fifty Years. New York: J. B. Lippincott Company, 1950.

Dyfyniad MLA

Bliven, Bruce. Twentieth Century Unlimited, From the Vantage Point of the First Fifty Years. New York: J. B. Lippincott Company, 1950.

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