E. Davis Lance, A. Easrerlin Richard, & N. Parker William. (1972). American Economic Growth an Economist's History of the United State (In lần thứ 1.). American: Haper & Row.

E. Davis Lance, A. Easrerlin Richard, and N. Parker William. American Economic Growth an Economist's History of the United State. In lần thứ 1. American: Haper & Row, 1972.

E. Davis Lance, A. Easrerlin Richard, and N. Parker William. American Economic Growth an Economist's History of the United State. In lần thứ 1. American: Haper & Row, 1972.