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-Zitierstil (17. Ausg.)Knight, Paul A.., John M. Porterfield, und Paul S. Galen. The Energy Resources Center Illustrated Guide to Home Retrofitting for Energy Savings. Washington: Hemisphere Publishing Corporation, 1981.
MLA-Zitierstil (9. Ausg.)Knight, Paul A.., et al. The Energy Resources Center Illustrated Guide to Home Retrofitting for Energy Savings. Hemisphere Publishing Corporation, 1981.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.