Freedman, R. (2012). Abraham Lincoln and Frederick Douglass: The story behind an American friendship. Houghton Mifflin Harcourt.
Style de citation Chicago (17e éd.)Freedman, Russell. Abraham Lincoln and Frederick Douglass: The Story Behind an American Friendship. Boston: Houghton Mifflin Harcourt, 2012.
Style de citation MLA (8e éd.)Freedman, Russell. Abraham Lincoln and Frederick Douglass: The Story Behind an American Friendship. Houghton Mifflin Harcourt, 2012.
Attention : ces citations peuvent ne pas être correctes à 100%.