APA (7th ed.) Citation

Fergason, D. (1949). A measure of corn: The key to world economy. Pen-in-Hand.

Chicago Style (17th ed.) Citation

Fergason, David. A Measure of Corn: The Key to World Economy. Oxford: Pen-in-Hand, 1949.

MLA (9th ed.) Citation

Fergason, David. A Measure of Corn: The Key to World Economy. Pen-in-Hand, 1949.