Van Pelt, R. (1996). Champion trees of Washington State ([4th ed.].). Washington State Big Tree Program in association with University of Washington Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVan Pelt, Robert. Champion Trees of Washington State. [4th ed.]. Seattle: Washington State Big Tree Program in association with University of Washington Press, 1996.
एमएलए (8वां संस्करण) प्रशस्ति पत्रVan Pelt, Robert. Champion Trees of Washington State. [4th ed.]. Washington State Big Tree Program in association with University of Washington Press, 1996.
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