APA (7th ed.) Citation

Harp, S. L., & Jones, L. K. (1981). Performance of air source heat pumps in energy efficient housing. American Society of Agricultural Engineers.

Chicago Style (17th ed.) Citation

Harp, Sam L., and L. K. Jones. Performance of Air Source Heat Pumps in Energy Efficient Housing. St. Joseph, Mich.: American Society of Agricultural Engineers, 1981.

MLA (9th ed.) Citation

Harp, Sam L., and L. K. Jones. Performance of Air Source Heat Pumps in Energy Efficient Housing. American Society of Agricultural Engineers, 1981.