Cita APA (7a ed.)

Sprague, G. F. (1955). Corn and corn improvement. Academic Press.

Cita Chicago Style (17a ed.)

Sprague, George F. Corn and Corn Improvement. New York: Academic Press, 1955.

Cita MLA (8a ed.)

Sprague, George F. Corn and Corn Improvement. Academic Press, 1955.