Cita APA (7th ed.)
Pettit, E., & Worthington, A. (2015). Sketches in the history of the Underground railroad. Open Road Integrated Media.
Cita Chicago (17th ed.)
Pettit, Eber, i Andrea Worthington. Sketches in the History of the Underground Railroad. New York, New York: Open Road Integrated Media, 2015.
Cita MLA (9th ed.)
Pettit, Eber, i Andrea Worthington. Sketches in the History of the Underground Railroad. Open Road Integrated Media, 2015.
Atenció: Aquestes cites poden no estar 100% correctes.