Macdonald, A. F. (1928). Federal aid: A study of the American subsidy system. T.Y. Crowell.
Lua i Stíl Chicago (17ú heag.)Macdonald, Austin F. Federal Aid: A Study of the American Subsidy System. New York: T.Y. Crowell, 1928.
Lua MLA (8ú heag.)Macdonald, Austin F. Federal Aid: A Study of the American Subsidy System. T.Y. Crowell, 1928.
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