Παραπομπή APA

(1950). Open spaces and community services: A portion of the comprehensive plan for the National Capital and its environs. Washington: [s.n.].

Παραπομπή Chicago Style

Open Spaces and Community Services: A Portion of the Comprehensive Plan for the National Capital and Its Environs. Washington: [s.n.], 1950.

Παραπομπή MLA

Open Spaces and Community Services: A Portion of the Comprehensive Plan for the National Capital and Its Environs. Washington: [s.n.], 1950.

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