Symposium on the Regional Geology of the State of Washington, Washington (State). Division of Geology and Earth Resources, Cheney, E. S., & Lasmanis, R. (1994). Regional geology of Washington State. Washington State Dept. of Natural Resources.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Symposium on the Regional Geology of the State of Washington, Washington (State). Division of Geology and Earth Resources, Eric S. Cheney, و Raymond Lasmanis. Regional Geology of Washington State. Olympia, WA: Washington State Dept. of Natural Resources, 1994.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Symposium on the Regional Geology of the State of Washington, et al. Regional Geology of Washington State. Washington State Dept. of Natural Resources, 1994.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.