Washington Association of County Officials, Washington State Association of County Officials, & Municipal Research and Services Center of Washington. Directory of Washington county officials. Washington Association of County Officials : Washington State Association of Counties.
Cita Chicago Style (17a ed.)Washington Association of County Officials, Washington State Association of County Officials, y Municipal Research and Services Center of Washington. Directory of Washington County Officials. Olympia, WA: Washington Association of County Officials : Washington State Association of Counties.
Cita MLA (8a ed.)Washington Association of County Officials, et al. Directory of Washington County Officials. Washington Association of County Officials : Washington State Association of Counties.