
Sources:
Hirt, Sonia A. 2014. Zoned in the USA: The Origins and Implications of American Land-Use Regulation. Illustrated edition. Ithaca ; London: Cornell University Press.
Gray, M. Nolan. 2022. Arbitrary Lines: How Zoning Broke the American City and How to Fix It. Island Press.
Cullingworth, Barry. 2004. Planning in the USA: policies, issues and processes. Routledge. Barry Cullingworth, Roger Caves (2013)