Washington State Highway Commission & Washington (State). Department of Highways. (1962). Historical markers.
Style de citation Chicago (17e éd.)Washington State Highway Commission et Washington (State). Department of Highways. Historical Markers. [Olympia, 1962.
Style de citation MLA (8e éd.)Washington State Highway Commission et Washington (State). Department of Highways. Historical Markers. 1962.
Attention : ces citations peuvent ne pas être correctes à 100%.