APA (7th ed.) Citation

Koller, E. F., & Jesness, O. B. (1941). Minnesota cooperative Oil associations. Agricultural Experiment Station.

Chicago Style (17th ed.) Citation

Koller, E. Fred, and O. B. Jesness. Minnesota Cooperative Oil Associations. St. Paul: Agricultural Experiment Station, 1941.

MLA (9th ed.) Citation

Koller, E. Fred, and O. B. Jesness. Minnesota Cooperative Oil Associations. Agricultural Experiment Station, 1941.