Denver Geotechnical Symposium, American Society of Civil Engineers. Colorado Section. Geotechnical Group, Association of Environmental & Engineering Geologists. Rocky Mountain Section, Colorado Association of Geotechnical Engineers, ebrary, Inc, Wiltshire, R. L., . . . Goss, C. M. (2007). Geo-volution: The evolution of Colorado's geological and geotechnical engineering practice : proceedings of the 2006 Biennial Geotechnical Seminar, November 10, 2006, Denver, Colorado. American Society of Civil Engineers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDenver Geotechnical Symposium, American Society of Civil Engineers. Colorado Section. Geotechnical Group, Association of Environmental & Engineering Geologists. Rocky Mountain Section, Colorado Association of Geotechnical Engineers, Inc ebrary, Richard L. Wiltshire, Minal L. Parekh, और Christoph M. Goss. Geo-volution: The Evolution of Colorado's Geological and Geotechnical Engineering Practice : Proceedings of the 2006 Biennial Geotechnical Seminar, November 10, 2006, Denver, Colorado. Reston, Va.: American Society of Civil Engineers, 2007.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDenver Geotechnical Symposium, et al. Geo-volution: The Evolution of Colorado's Geological and Geotechnical Engineering Practice : Proceedings of the 2006 Biennial Geotechnical Seminar, November 10, 2006, Denver, Colorado. American Society of Civil Engineers, 2007.