Scheuerman, R. D., McGregor, A. C., & Clement, J. (2013). Harvest heritage: Agricultural origins and heirloom crops of the Pacific Northwest. Washington State University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रScheuerman, Richard D., Alexander Campbell McGregor, और John Clement. Harvest Heritage: Agricultural Origins and Heirloom Crops of the Pacific Northwest. Pullman, Wash.: Washington State University Press, 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रScheuerman, Richard D., et al. Harvest Heritage: Agricultural Origins and Heirloom Crops of the Pacific Northwest. Washington State University Press, 2013.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.