Dyfyniad APA

United States Information Agency. American sketchbook. Short biosketches of 21 distinguished americans.

Dyfyniad Arddull Chicago

United States Information Agency. American Sketchbook. Short Biosketches of 21 Distinguished Americans.

Dyfyniad MLA

United States Information Agency. American Sketchbook. Short Biosketches of 21 Distinguished Americans.

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