Cita APA (7a ed.)

Black, J. D., & Kiefer, M. E. (1948). Future food and agriculture policy: A program for the next ten years. McGraw-Hill.

Cita Chicago Style (17a ed.)

Black, John D., y Maxine Enlow Kiefer. Future Food and Agriculture Policy: A Program for the Next Ten Years. New York [etc.]: McGraw-Hill, 1948.

Cita MLA (9a ed.)

Black, John D., y Maxine Enlow Kiefer. Future Food and Agriculture Policy: A Program for the Next Ten Years. McGraw-Hill, 1948.