Kaye, T. N., & Maxwell, C. L. (1991). Plant life of Washington State: Dungeness Spit, Willapa Hills, and lower Columbia River. Washington Native Plant Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKaye, Thomas N., और Cathy L. Maxwell. Plant Life of Washington State: Dungeness Spit, Willapa Hills, and Lower Columbia River. Seattle, WA: Washington Native Plant Society, 1991.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKaye, Thomas N., और Cathy L. Maxwell. Plant Life of Washington State: Dungeness Spit, Willapa Hills, and Lower Columbia River. Washington Native Plant Society, 1991.
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