Allen, J. E., Burns, M., & Sargent, S. C. (1986). Cataclysms on the Columbia: A layman's guide to the features produced by the catastrophic Bretz floods in the Pacific Northwest. Timber Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Allen, John Eliot, Marjorie Burns, و Sam C. Sargent. Cataclysms on the Columbia: A Layman's Guide to the Features Produced by the Catastrophic Bretz Floods in the Pacific Northwest. Portland, Or.: Timber Press, 1986.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Allen, John Eliot, et al. Cataclysms on the Columbia: A Layman's Guide to the Features Produced by the Catastrophic Bretz Floods in the Pacific Northwest. Timber Press, 1986.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.