Nature Conservancy (U.S.). (1980). The Nature Conservancy, ten-year report to Northwest members: The 1970's in the Pacific Northwest and the Northern Rockies. The Conservancy.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNature Conservancy (U.S.). The Nature Conservancy, Ten-year Report to Northwest Members: The 1970's in the Pacific Northwest and the Northern Rockies. [s.l.]: The Conservancy, 1980.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNature Conservancy (U.S.). The Nature Conservancy, Ten-year Report to Northwest Members: The 1970's in the Pacific Northwest and the Northern Rockies. The Conservancy, 1980.
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