APA (7 वां संस्करण) प्रशस्ति पत्र
Hodges, G. R. (2010). David Ruggles: A radical black abolitionist and the Underground Railroad in New York City. University of North Carolina Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
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.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Hodges, Graham Russell. David Ruggles: A Radical Black Abolitionist and the Underground Railroad in New York City. University of North Carolina Press, 2010.
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