Ashley, R. L. (1902). The American federal state: A text-book in civics for high schools and academies. Macmillan.
Lua i Stíl Chicago (17ú heag.)Ashley, Roscoe Lewis. The American Federal State: A Text-book in Civics for High Schools and Academies. New York, London: Macmillan, 1902.
Lua MLA (8ú heag.)Ashley, Roscoe Lewis. The American Federal State: A Text-book in Civics for High Schools and Academies. Macmillan, 1902.
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