Cita APA (7th ed.)

Spence, C. C. (1978). Montana: A bicentennial history. Norton.

Cita Chicago (17th ed.)

Spence, Clark C. Montana: A Bicentennial History. New York: Norton, 1978.

Cita MLA (8th ed.)

Spence, Clark C. Montana: A Bicentennial History. Norton, 1978.