Knight, P. A., Porterfield, J. M., & Galen, P. S. (1981). The energy resources center illustrated guide to home retrofitting for energy savings. Hemisphere Publishing Corporation.
Citazione stile Chigago Style (17a edizione)Knight, Paul A.., John M. Porterfield, e Paul S. Galen. The Energy Resources Center Illustrated Guide to Home Retrofitting for Energy Savings. Washington: Hemisphere Publishing Corporation, 1981.
Citatione MLA (9a ed.)Knight, Paul A.., et al. The Energy Resources Center Illustrated Guide to Home Retrofitting for Energy Savings. Hemisphere Publishing Corporation, 1981.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.