Johnson, D. G., & Gustafson, R. L. (1962). Grain-yields and the American food supply: An analysis of yield changes and possibilities. University press.
Chicago-Zitierstil (17. Ausg.)Johnson, David Gale, und Robert L. Gustafson. Grain-yields and the American Food Supply: An Analysis of Yield Changes and Possibilities. Chicago: University press, 1962.
MLA-Zitierstil (9. Ausg.)Johnson, David Gale, und Robert L. Gustafson. Grain-yields and the American Food Supply: An Analysis of Yield Changes and Possibilities. University press, 1962.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.