Dyfyniad APA

Hart, A. B. (1918). School history of the United States. American Book Co..

Dyfyniad Arddull Chicago

Hart, Albert Bushnell. School History of the United States. New York: American Book Co., 1918.

Dyfyniad MLA

Hart, Albert Bushnell. School History of the United States. American Book Co., 1918.

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