ebrary, Inc, Goble, D., & Hirt, P. W. (1999). Northwest lands, northwest peoples: Readings in environmental history. University of Washington Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)ebrary, Inc, Dale Goble, و Paul W. Hirt. Northwest Lands, Northwest Peoples: Readings in Environmental History. Seattle, Wash.: University of Washington Press, 1999.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)ebrary, Inc, et al. Northwest Lands, Northwest Peoples: Readings in Environmental History. University of Washington Press, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.