Washington (State). Division of Geology and Earth Resources & Manson, C. (1997). Bibliography of the geology and mineral resources of Stevens County, Washington. Washington Division of Geology and Earth Resources.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Washington (State). Division of Geology and Earth Resources و Connie Manson. Bibliography of the Geology and Mineral Resources of Stevens County, Washington. [Washington: Washington Division of Geology and Earth Resources, 1997.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Washington (State). Division of Geology and Earth Resources و Connie Manson. Bibliography of the Geology and Mineral Resources of Stevens County, Washington. Washington Division of Geology and Earth Resources, 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.