Speck, J. (2020). Walkability as a new urban Movement: Von Jeff Speck. Topos.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSpeck, Jeff. "Walkability as a New Urban Movement: Von Jeff Speck." Topos 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSpeck, Jeff. "Walkability as a New Urban Movement: Von Jeff Speck." Topos, 2020.
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