Varnes, D. J., Scott, G. R., & Cardwell, W. D. E. (1967). General and engineering geology of the United States Air Force Academy Site, Colorado: A study of the relation of geology, engineering, and water supply to the planning and construction of the U.S. Air Force Academy. US Gov. Print. Off.
Chicago-Zitierstil (17. Ausg.)Varnes, David J., Glenn R. Scott, und W. D. E. Cardwell. General and Engineering Geology of the United States Air Force Academy Site, Colorado: A Study of the Relation of Geology, Engineering, and Water Supply to the Planning and Construction of the U.S. Air Force Academy. Washington: US Gov. Print. Off, 1967.
MLA-Zitierstil (9. Ausg.)Varnes, David J., et al. General and Engineering Geology of the United States Air Force Academy Site, Colorado: A Study of the Relation of Geology, Engineering, and Water Supply to the Planning and Construction of the U.S. Air Force Academy. US Gov. Print. Off, 1967.