APA (7th ed.) Citation

Johnston, P. E., & Wills, J. E. (1933). A study of the cost of horse and tractor power on Illinois farms. Univ. of Ill.

Chicago Style (17th ed.) Citation

Johnston, Paul E., and J. E. Wills. A Study of the Cost of Horse and Tractor Power on Illinois Farms. Urbana, Ill: Univ. of Ill, 1933.

MLA (9th ed.) Citation

Johnston, Paul E., and J. E. Wills. A Study of the Cost of Horse and Tractor Power on Illinois Farms. Univ. of Ill, 1933.