Cita APA

Sprague, G. F. 1. (1977). Corn and corn improvement American Society of Agronomy.

Citación estilo Chicago

Sprague, G. F. 1902-. Corn and Corn Improvement. [2nd ed.]. Madison, Wis.: American Society of Agronomy, 1977.

Cita MLA

Sprague, G. F. 1902-. Corn and Corn Improvement. [2nd ed.]. Madison, Wis.: American Society of Agronomy, 1977.