Não informado. (1935). Planning and Civic Comment. National Conference on State Parks.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Planning and Civic Comment. Washington: National Conference on State Parks, 1935.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Planning and Civic Comment. National Conference on State Parks, 1935.
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