Pacific Northwest Research Station (Portland, Or.), & McGinnis, W. J. (1997). County portraits of Washington State. U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Pacific Northwest Research Station (Portland, Or.), و Wendy J. McGinnis. County Portraits of Washington State. Portland, Or. (333 S.W. First Ave., Portland 97208-3890): U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1997.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Pacific Northwest Research Station (Portland, Or.), و Wendy J. McGinnis. County Portraits of Washington State. U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.