APA (7th ed.) Citation

Haag, M. R., Jorgensen, E., & Clark, W. W. (1941). Extension at Work. Extension Service, College of Agriculture, University of Wisconsin.

Chicago Style (17th ed.) Citation

Haag, Maurice R., Emil Jorgensen, and Warren W. Clark. Extension at Work. Madison, Wisconsin: Extension Service, College of Agriculture, University of Wisconsin, 1941.

MLA (9th ed.) Citation

Haag, Maurice R., et al. Extension at Work. Extension Service, College of Agriculture, University of Wisconsin, 1941.