Dunwell, F. F. (2008). Hudson: America's river. Columbia University Press.
Lua i Stíl Chicago (17ú heag.)Dunwell, Frances F. Hudson: America's River. New York: Columbia University Press, 2008.
Lua MLA (9ú heag.)Dunwell, Frances F. Hudson: America's River. Columbia University Press, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.