APA (7th ed.) Citation

Doering, O. C. (1976). What is agricultural extension?: How is it relevant to an energy extension service? Agricultural Economics Dept., Purdue University.

Chicago Style (17th ed.) Citation

Doering, Otto C. What Is Agricultural Extension?: How Is It Relevant to an Energy Extension Service? West Lafayette, Ind.: Agricultural Economics Dept., Purdue University, 1976.

MLA (9th ed.) Citation

Doering, Otto C. What Is Agricultural Extension?: How Is It Relevant to an Energy Extension Service? Agricultural Economics Dept., Purdue University, 1976.