Cita APA

Ball, V. E., Bureau, J., Nehring, R., & Somwaru, A. (1997). Agricultural productivity revisited. Wisconsin: American Agricultural Economics Association.

Citación estilo Chicago

Ball, V. Eldon, Jean-Christophe Bureau, Richard Nehring, and Agapi Somwaru. Agricultural Productivity Revisited. Wisconsin: American Agricultural Economics Association, 1997.

Cita MLA

Ball, V. Eldon, Jean-Christophe Bureau, Richard Nehring, and Agapi Somwaru. Agricultural Productivity Revisited. Wisconsin: American Agricultural Economics Association, 1997.