APA (7th ed.) Citation

Downs, H. W., Clary, B. L., & Whitney, R. W. (1980). Extrusion cooking for alcohol production. American Society of Agricultural Engineers.

Chicago Style (17th ed.) Citation

Downs, H. Willard, Bobby L. Clary, and Richard W. Whitney. Extrusion Cooking for Alcohol Production. St. Joseph, Mich.: American Society of Agricultural Engineers, 1980.

MLA (9th ed.) Citation

Downs, H. Willard, et al. Extrusion Cooking for Alcohol Production. American Society of Agricultural Engineers, 1980.