Dyfyniad APA

 Hopper, L. J. (2005).  Security and site design: A landscape architectural approach to analysis, assessment, and design implementation.  John Wiley & Sons.

Dyfyniad Arddull Chicago

 Hopper, Leonard J.  Security and Site Design: A Landscape Architectural Approach to Analysis, Assessment, and Design Implementation.  John Wiley & Sons, 2005.

Dyfyniad MLA

 Hopper, Leonard J.  Security and Site Design: A Landscape Architectural Approach to Analysis, Assessment, and Design Implementation.  John Wiley & Sons, 2005.

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