Morris, C. (1917). School history of the United States of America. J.B. Lippincott Co..
Lua i Stíl Chicago (17ú heag.)Morris, Charles. School History of the United States of America. Philadelphia: J.B. Lippincott Co., 1917.
Lua MLA (8ú heag.)Morris, Charles. School History of the United States of America. J.B. Lippincott Co., 1917.
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