Dyfyniad APA

Woodruff, W. (1975). America's impact on the world. London: Macmillan.

Dyfyniad Arddull Chicago

Woodruff, William. America's Impact On the World. London: Macmillan, 1975.

Dyfyniad MLA

Woodruff, William. America's Impact On the World. London: Macmillan, 1975.

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