APA (7th ed.) Citation

Jones, P., Day, T., & Butcher, K. (2009). Energy efficient heating: An overview. CIBSE.

Chicago Style (17th ed.) Citation

Jones, Phil, Tony Day, and Ken Butcher. Energy Efficient Heating: An Overview. London: CIBSE, 2009.

MLA (9th ed.) Citation

Jones, Phil, et al. Energy Efficient Heating: An Overview. CIBSE, 2009.