United States National Capital Regional Planning Council & Westbrook, R. B. (1966). Recreational open space priorities.
Citace podle Chicago (17th ed.)United States National Capital Regional Planning Council a Richard B. Westbrook. Recreational Open Space Priorities. Washington, 1966.
Citace podle MLA (9th ed.)United States National Capital Regional Planning Council a Richard B. Westbrook. Recreational Open Space Priorities. 1966.
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