Troy, P. Urban planning in the late twentieth century: Patrick Troy. A companion to the city.(2000).
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTroy, Patrick. "Urban Planning in the Late Twentieth Century: Patrick Troy." A Companion to the City.(2000) .
एमएलए (8वां संस्करण) प्रशस्ति पत्रTroy, Patrick. "Urban Planning in the Late Twentieth Century: Patrick Troy." A Companion to the City.(2000), .
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