APA (7th ed.) Citation

Purdue University. Agriculture Extension Service & Purdue University. Cooperative Extension Service. (1956). Extension circular. Purdue University, Agriculture Extension Service.

Chicago Style (17th ed.) Citation

Purdue University. Agriculture Extension Service and Purdue University. Cooperative Extension Service. Extension Circular. Lafayette, Ind.: Purdue University, Agriculture Extension Service, 1956.

MLA (9th ed.) Citation

Purdue University. Agriculture Extension Service and Purdue University. Cooperative Extension Service. Extension Circular. Purdue University, Agriculture Extension Service, 1956.