Leland, J. (2005). Aliens in the backyard: Plant and animal imports into America. University of South Carolina Press.
Lua i Stíl Chicago (17ú heag.)Leland, John. Aliens in the Backyard: Plant and Animal Imports into America. Columbia, SC: University of South Carolina Press, 2005.
Lua MLA (9ú heag.)Leland, John. Aliens in the Backyard: Plant and Animal Imports into America. University of South Carolina Press, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.