Cita APA (7a ed.)

Delorit, R. J., & Ahlgren, H. L. (1959). Crop production (2nd. ed.). Prentice-Hall.

Cita Chicago Style (17a ed.)

Delorit, Richard J., y Henry L. Ahlgren. Crop Production. 2nd. ed. New Jersey: Prentice-Hall, 1959.

Cita MLA (8a ed.)

Delorit, Richard J., y Henry L. Ahlgren. Crop Production. 2nd. ed. Prentice-Hall, 1959.