1. Department of Environmental Resources DER. (1999). Low-Impact Development Design Strategies: An Integrated Design Approach Prince George’s County Largo Md.
2. Federal Housing Administration (FHA) (1964). “Planned unit development with a homes association.” Land Planning Bull. 6 USGPO Washington D.C.
3. Land use intensity, the LUI scale, and zoning.;Hanke B. R.;J. Urban Plann. Dev.,1967
4. Hydrologic impact of planned unit developments.;McCuen R. H.;J. Urban Plann. Dev.,1975
5. Urban sprawl.;Mitchell J. G.;Natl. Geogr.,2001