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.
Chicago Style (17th ed.) CitationKnight, Paul A.., John M. Porterfield, and Paul S. Galen. The Energy Resources Center Illustrated Guide to Home Retrofitting for Energy Savings. Washington: Hemisphere Publishing Corporation, 1981.
MLA (9th ed.) CitationKnight, Paul A.., et al. The Energy Resources Center Illustrated Guide to Home Retrofitting for Energy Savings. Hemisphere Publishing Corporation, 1981.
Warning: These citations may not always be 100% accurate.