Cita APA

Challenge to agronomy for the future Stillwater, O., American Society of Agronomy, Whitney, R. S., Breth, S. A., & Stelly, M. (1967). Papers of the annual meeting. Wisconsin, Estados Unidos: American Society of Agronomy.

Citación estilo Chicago

Challenge to agronomy for the future Stillwater, Oklahoma, American Society of Agronomy, Robert S. Whitney, Steven A. Breth, y Mathias Stelly. Papers of the Annual Meeting. Wisconsin, Estados Unidos: American Society of Agronomy, 1967.

Cita MLA

Challenge to agronomy for the future Stillwater, Oklahoma, et al. Papers of the Annual Meeting. Wisconsin, Estados Unidos: American Society of Agronomy, 1967.