APA (7th ed.) Citation

Spray, R. (1979). Energy conservation in grain drying and storage. [Cooperative Extension Service, Clemson University?].

Chicago Style (17th ed.) Citation

Spray, Richard. Energy Conservation in Grain Drying and Storage. [Clemson, S.C.]: [Cooperative Extension Service, Clemson University?], 1979.

MLA (9th ed.) Citation

Spray, Richard. Energy Conservation in Grain Drying and Storage. [Cooperative Extension Service, Clemson University?], 1979.