Washington (State). Division of Geology and Earth Resources & Geological Society of America. Cordilleran Section. Meeting. (1989). Geologic guidebook for Washington and adjacent areas: Prepared for the 85th Annual Meeting of the Cordilleran Section, Geological Society of America, May 8-11, 1989, Spokane, Washington. Washington Dept. of Natural Resources, Division of Geology and Earth Resources.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Washington (State). Division of Geology and Earth Resources و Geological Society of America. Cordilleran Section. Meeting. Geologic Guidebook for Washington and Adjacent Areas: Prepared for the 85th Annual Meeting of the Cordilleran Section, Geological Society of America, May 8-11, 1989, Spokane, Washington. Olympia, WA: Washington Dept. of Natural Resources, Division of Geology and Earth Resources, 1989.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Washington (State). Division of Geology and Earth Resources و Geological Society of America. Cordilleran Section. Meeting. Geologic Guidebook for Washington and Adjacent Areas: Prepared for the 85th Annual Meeting of the Cordilleran Section, Geological Society of America, May 8-11, 1989, Spokane, Washington. Washington Dept. of Natural Resources, Division of Geology and Earth Resources, 1989.