Fredericks, A. D., Purvis, R. N., & Disher Fredericks, P. (2023). In search of the old ones: An odyssey among ancient trees. Smithsonian Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFredericks, Anthony D., Rebecca Noelle Purvis, और Phyllis Disher Fredericks. In Search of the Old Ones: An Odyssey Among Ancient Trees. Washington, DC: Smithsonian Books, 2023.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFredericks, Anthony D., et al. In Search of the Old Ones: An Odyssey Among Ancient Trees. Smithsonian Books, 2023.
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