Cita APA (7a ed.)

Leonard, W. H., & Martin, J. H. (1963). Cereal crops. Macmillan.

Cita Chicago Style (17a ed.)

Leonard, Warren H., y John H. Martin. Cereal Crops. New York: Macmillan, 1963.

Cita MLA (9a ed.)

Leonard, Warren H., y John H. Martin. Cereal Crops. Macmillan, 1963.