Duff, U. G. (1951). A social and economic history of Britain, 1760-1950.
Citação norma ChicagoDuff, Ursula Grant. A Social and Economic History of Britain, 1760-1950. 1951.
MLA引文Duff, Ursula Grant. A Social and Economic History of Britain, 1760-1950. 1951.
警告:這些引文格式不一定是100%准確.