1. BondaP., and K.Sosnowchick. 2007. Sustainable Commercial Interiors. Hoboken: Wiley.
2. CalkinsM.2009. Materials for Sustainable Sites: A Complete Guide to the Evaluation, Selection, and Use of Sustainable Construction Materials. Hoboken: Wiley.
3. Carpenter, W. J.2009. Sustainable Modern Home: Process and Design. New Jersey: John Wiley and Sons, Inc.
4. Carroon, J.2010. Sustainable Preservation. Green Existing Buildings. Hoboken: Wiley.
5. Robust estimation of Cronbach's alpha