Hopper, L. J., & Droge, M. J. (2005). Security and site design: A landscape architectural approach to analysis, assessment, and design implementation. Wiley.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHopper, Leonard J., और Martha J. Droge. Security and Site Design: A Landscape Architectural Approach to Analysis, Assessment, and Design Implementation. Hoboken, N.J: Wiley, 2005.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHopper, Leonard J., और Martha J. Droge. Security and Site Design: A Landscape Architectural Approach to Analysis, Assessment, and Design Implementation. Wiley, 2005.
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