Varner, C. (2024). 50 keystone flora species of the Pacific Northwest: A pocket guide. University of Washington Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVarner, Collin. 50 Keystone Flora Species of the Pacific Northwest: A Pocket Guide. Seattle: University of Washington Press, 2024.
एमएलए (8वां संस्करण) प्रशस्ति पत्रVarner, Collin. 50 Keystone Flora Species of the Pacific Northwest: A Pocket Guide. University of Washington Press, 2024.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.