Washington (State). Department of Commerce and Economic Development. Business and Economic Research Division. Directory of Washington State manufacturers. Business and Economic Research Division, Dept. of Commerce and Economic Development.
Style de citation Chicago (17e éd.)Washington (State). Department of Commerce and Economic Development. Business and Economic Research Division. Directory of Washington State Manufacturers. Olympia: Business and Economic Research Division, Dept. of Commerce and Economic Development.
Style de citation MLA (8e éd.)Washington (State). Department of Commerce and Economic Development. Business and Economic Research Division. Directory of Washington State Manufacturers. Business and Economic Research Division, Dept. of Commerce and Economic Development.