Betts, R. B. (1985). In search of York: The slave who went to the Pacific with Lewis and Clark. Colorado Associated University Press.
Style de citation Chicago (17e éd.)Betts, Robert B. In Search of York: The Slave Who Went to the Pacific with Lewis and Clark. Boulder, Colo.: Colorado Associated University Press, 1985.
Style de citation MLA (8e éd.)Betts, Robert B. In Search of York: The Slave Who Went to the Pacific with Lewis and Clark. Colorado Associated University Press, 1985.
Attention : ces citations peuvent ne pas être correctes à 100%.