Cita APA (7a ed.)

Flexner, J. T. (1944). Steamboats Come True: American Inventors in Action. The Viking Press.

Cita Chicago Style (17a ed.)

Flexner, James Thomas. Steamboats Come True: American Inventors in Action. New York: The Viking Press, 1944.

Cita MLA (9a ed.)

Flexner, James Thomas. Steamboats Come True: American Inventors in Action. The Viking Press, 1944.