Cita APA (7a ed.)

Hughes, H. D., & Henson, E. R. (1930). Crop production; principales and practices: A handbook of information for the student of agriculture. Mcmillan.

Cita Chicago Style (17a ed.)

Hughes, Harold D., y Edwin R. Henson. Crop Production; Principales and Practices: A Handbook of Information for the Student of Agriculture. New York: Mcmillan, 1930.

Cita MLA (8a ed.)

Hughes, Harold D., y Edwin R. Henson. Crop Production; Principales and Practices: A Handbook of Information for the Student of Agriculture. Mcmillan, 1930.