Opal, J. M. (2008). Beyond the farm: National ambitions in rural New England. University of Pennsylvania Press.
Lua i Stíl Chicago (17ú heag.)Opal, J. M. Beyond the Farm: National Ambitions in Rural New England. Philadelphia: University of Pennsylvania Press, 2008.
Lua MLA (9ú heag.)Opal, J. M. Beyond the Farm: National Ambitions in Rural New England. University of Pennsylvania Press, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.