Gavian, R. W., & Hamm, W. A. (1954). The American story. D.C. Heath.
Dyfyniad Arddull ChicagoGavian, Ruth Wood, and William Albert Hamm. The American Story. Boston: D.C. Heath, 1954.
Dyfyniad MLAGavian, Ruth Wood, and William Albert Hamm. The American Story. D.C. Heath, 1954.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.