APA

Mitchell G. D., .The impact of U.S. immigration policy on the economic `quality' of german and austrian immigrants in the 1930s. : .

Chicago

Mitchell G D, .The impact of U.S. immigration policy on the economic `quality' of german and austrian immigrants in the 1930s. : .

Harvard

Mitchell G. D., .The impact of U.S. immigration policy on the economic `quality' of german and austrian immigrants in the 1930s. : .

MLA

Mitchell G D, .: . .