Allen, F. L. (1972). Since yesterday: The 1930s in America. September 3, 1929-september 3, 1939. Harper and Row.
Citazione stile Chigago Style (17a edizione)Allen, Frederick Lewis. Since Yesterday: The 1930s in America. September 3, 1929-september 3, 1939. Nueva York: Harper and Row, 1972.
Citatione MLA (9a ed.)Allen, Frederick Lewis. Since Yesterday: The 1930s in America. September 3, 1929-september 3, 1939. Harper and Row, 1972.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.