Duffin, A. P. (2007). Plowed under: Agriculture & environment in the Palouse. University of Washington Press.
Lua i Stíl Chicago (17ú heag.)Duffin, Andrew P. Plowed Under: Agriculture & Environment in the Palouse. Seattle: University of Washington Press, 2007.
Lua MLA (9ú heag.)Duffin, Andrew P. Plowed Under: Agriculture & Environment in the Palouse. University of Washington Press, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.