Cita APA

Austin, R. B., Cantero-Martínez, C., Arrúe Ugarte, J. L., Playán Jubillar, E., & Cano-Marcellán, P. (1998). Yield–rainfall relationships in cereal cropping systems in the Ebro river valley of Spain.

Citación estilo Chicago

Austin, Roger B., Carlos Cantero-Martínez, José Luis Arrúe Ugarte, Enrique Playán Jubillar, y P. Cano-Marcellán. Yield–rainfall Relationships in Cereal Cropping Systems in the Ebro River Valley of Spain. 1998.

Cita MLA

Austin, Roger B., et al. Yield–rainfall Relationships in Cereal Cropping Systems in the Ebro River Valley of Spain. 1998.