APA

Herndon W. H., Hertz E., . (19401938). The hidden Lincoln: from the letters and papers of William H. Herndon. New York: Blue Ribbon Books.

Chicago

Herndon William Henry, Hertz Emanuel, . 19401938. The hidden Lincoln: from the letters and papers of William H. Herndon. New York: Blue Ribbon Books.

Harvard

Herndon W. H., Hertz E., . (19401938). The hidden Lincoln: from the letters and papers of William H. Herndon. New York: Blue Ribbon Books.

MLA

Herndon William Henry, Hertz Emanuel, . The hidden Lincoln: from the letters and papers of William H. Herndon. New York: Blue Ribbon Books. 19401938.