Washington State Association of Counties, Washington Association of County Officials, Washington State Association of County Officials, & Municipal Research and Services Center of Washington. (1970). Directory of county officials in Washington State. Washington State Association of County Officials.
Style de citation Chicago (17e éd.)Washington State Association of Counties, Washington Association of County Officials, Washington State Association of County Officials, et Municipal Research and Services Center of Washington. Directory of County Officials in Washington State. Olympia, Wash.: Washington State Association of County Officials, 1970.
Style de citation MLA (8e éd.)Washington State Association of Counties, et al. Directory of County Officials in Washington State. Washington State Association of County Officials, 1970.