Robson, K. A., Richter, A., & Filbert, M. (2008). Encyclopedia of Northwest native plants for gardens and landscapes. Timber Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRobson, Kathleen A., Alice Richter, और Marianne Filbert. Encyclopedia of Northwest Native Plants for Gardens and Landscapes. Portland, Or.: Timber Press, 2008.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRobson, Kathleen A., et al. Encyclopedia of Northwest Native Plants for Gardens and Landscapes. Timber Press, 2008.
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