Cita APA

Hay, R. K. M., & Walker, A. J. (1989). An introduction to the physiology of crop yield. Wiley, Estados Unidos: Longman Scientific & Technical.

Citación estilo Chicago

Hay, Robert K. M., and Andrew J. Walker. An Introduction to the Physiology of Crop Yield. Wiley, Estados Unidos: Longman Scientific & Technical, 1989.

Cita MLA

Hay, Robert K. M., and Andrew J. Walker. An Introduction to the Physiology of Crop Yield. Wiley, Estados Unidos: Longman Scientific & Technical, 1989.