APA-referens (7:e uppl.)

Hodges, G. R. (2010). David Ruggles: A radical black abolitionist and the Underground Railroad in New York City. University of North Carolina Press.

Chicago-referens (17:e uppl.)

Hodges, Graham Russell. David Ruggles: A Radical Black Abolitionist and the Underground Railroad in New York City. Chapel Hill: University of North Carolina Press, 2010.

MLA-referens (9:e uppl.)

Hodges, Graham Russell. David Ruggles: A Radical Black Abolitionist and the Underground Railroad in New York City. University of North Carolina Press, 2010.