Calkins, M. (2012). The sustainable sites handbook: A complete guide to the principles, strategies, and practices for sustainable landscapes ; [the Sustainables Sites Inititiative]. Wiley.
Chicago-Zitierstil (17. Ausg.)Calkins, Meg. The Sustainable Sites Handbook: A Complete Guide to the Principles, Strategies, and Practices for Sustainable Landscapes ; [the Sustainables Sites Inititiative]. Hoboken, NJ: Wiley, 2012.
MLA-Zitierstil (9. Ausg.)Calkins, Meg. The Sustainable Sites Handbook: A Complete Guide to the Principles, Strategies, and Practices for Sustainable Landscapes ; [the Sustainables Sites Inititiative]. Wiley, 2012.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.