APA引文

Nash, G. B. (1991). Freedom by degrees: Emancipation in Pennsylvania and its aftermath. Oxford University Press.

Chicago Style (17th ed.) Citation

Nash, Gary B. Freedom by Degrees: Emancipation in Pennsylvania and Its Aftermath. New York: Oxford University Press, 1991.

MLA引文

Nash, Gary B. Freedom by Degrees: Emancipation in Pennsylvania and Its Aftermath. Oxford University Press, 1991.