Cita APA (7a ed.)

Boyd, W. L. (2019). A Life on the Middle West's Never-Ending Frontier. University of Iowa Press.

Cita Chicago Style (17a ed.)

Boyd, Willard L. A Life on the Middle West's Never-Ending Frontier. Iowa City: University of Iowa Press, 2019.

Cita MLA (8a ed.)

Boyd, Willard L. A Life on the Middle West's Never-Ending Frontier. University of Iowa Press, 2019.