APA (7th ed.) Citation

Kastor, P. J. (2011). William Clark's world: Describing America in an age of unknowns. Yale University Press.

Chicago Style (17th ed.) Citation

Kastor, Peter J. William Clark's World: Describing America in an Age of Unknowns. New Haven [Conn.]: Yale University Press, 2011.

MLA (9th ed.) Citation

Kastor, Peter J. William Clark's World: Describing America in an Age of Unknowns. Yale University Press, 2011.