Girling, C. L., & Helphand, K. I. (1994). Yard, street, park: The design of suburban open space. J. Wiley.
Lua i Stíl Chicago (17ú heag.)Girling, Cynthia L., agus Kenneth I. Helphand. Yard, Street, Park: The Design of Suburban Open Space. New York: J. Wiley, 1994.
Lua MLA (9ú heag.)Girling, Cynthia L., agus Kenneth I. Helphand. Yard, Street, Park: The Design of Suburban Open Space. J. Wiley, 1994.
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