Cita APA (7a ed.)

Hughes, H. D., & Henson, E. R. (1957). Crop production: Principles and practices. Macmillan.

Cita Chicago Style (17a ed.)

Hughes, Harold D., y Edwin R. Henson. Crop Production: Principles and Practices. New York: Macmillan, 1957.

Cita MLA (8a ed.)

Hughes, Harold D., y Edwin R. Henson. Crop Production: Principles and Practices. Macmillan, 1957.