Campbell, E. H. (1956). Franchises in the State of Washington. Published by Bureau of Governmental Research and Services, University of Washington; distributed by University of Washington Press.
Lua i Stíl Chicago (17ú heag.)Campbell, Ernest H. Franchises in the State of Washington. Seattle: Published by Bureau of Governmental Research and Services, University of Washington; distributed by University of Washington Press, 1956.
Lua MLA (8ú heag.)Campbell, Ernest H. Franchises in the State of Washington. Published by Bureau of Governmental Research and Services, University of Washington; distributed by University of Washington Press, 1956.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.