Hopper, L. J. (2005). Security and Site Designa Landscape Architectural Approach to Analysis, assessment, and design implementationLeonard J. Hopper and Martha J. Droge. John Wiley & Sons.
Chicago-referens (17:e uppl.)Hopper, Leonard J. Security and Site Designa Landscape Architectural Approach to Analysis, Assessment, and Design ImplementationLeonard J. Hopper and Martha J. Droge. John Wiley & Sons, 2005.
MLA-referens (8:e uppl.)Hopper, Leonard J. Security and Site Designa Landscape Architectural Approach to Analysis, Assessment, and Design ImplementationLeonard J. Hopper and Martha J. Droge. John Wiley & Sons, 2005.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.