APA (7e ed.) Bronvermelding
Pettit, E., & Worthington, A. (2015). Sketches in the history of the Underground railroad. Open Road Integrated Media.
Chicago (17e ed.) Bronvermelding
Pettit, Eber, en Andrea Worthington. Sketches in the History of the Underground Railroad. New York, New York: Open Road Integrated Media, 2015.
MLA (9e ed.) Bronvermelding
Pettit, Eber, en Andrea Worthington. Sketches in the History of the Underground Railroad. Open Road Integrated Media, 2015.
Let op: Deze citaties zijn niet altijd 100% accuraat.