National Endowment for the Humanities, Washington State University. Department of History, Stratton, D. H., & Frykman, G. A. (1988). The Changing Pacific Northwest: Interpreting its past. Washington State University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Endowment for the Humanities, Washington State University. Department of History, David H. Stratton, و George A. Frykman. The Changing Pacific Northwest: Interpreting Its Past. Pullman, Wash.: Washington State University Press, 1988.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)National Endowment for the Humanities, et al. The Changing Pacific Northwest: Interpreting Its Past. Washington State University Press, 1988.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.