McGowan, Vance R. & Morton, Winston H. Grand Ronde Basin Fish Habitat Enhancement Project, 2008 Annual Report., report, July 1, 2009; (https://digital.library.unt.edu/ark:/67531/metadc927756/m1/2/: accessed May 22, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .