Tohutoro APA (7th ed.)
Charnwood, G. R. B. Abraham Lincoln. Pocket Books.
Tohutoru Kātū Chicago (17th ed.)
Charnwood, Godfrey Rathbone Benson. Abraham Lincoln. Nueva York, EUA: Pocket Books.
Tohutoro MLA (9th ed.)
Charnwood, Godfrey Rathbone Benson. Abraham Lincoln. Pocket Books.
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