APA (7th ed.) Citation

Richey, C. B., Barrett, J. R., & Foster, G. H. (1980). A biomass gasification furnace. American Society of Agricultural Engineers.

Chicago Style (17th ed.) Citation

Richey, C. B., J. R. Barrett, and George H. Foster. A Biomass Gasification Furnace. St. Joseph, Mich.: American Society of Agricultural Engineers, 1980.

MLA (9th ed.) Citation

Richey, C. B., et al. A Biomass Gasification Furnace. American Society of Agricultural Engineers, 1980.