1. Baytok S. 2010. Seismic investigation and attribute analysis of faults and fractures within a tight-gas sandstone reservoir: Williams Fork Formation, Mamm Creek Field, Piceance Basin, Colorado. MS thesis, University of Colorado, Boulder, CO.
2. Carmichael R.S. 1989. Practical Handbook of Physical Properties of Rocks and Minerals. University of lowa Department of Geology, lowa city. CRC Press, Boca Raton, FL.
3. Structural implications of underground coal mining in the Mesaverde Group in the Somerset coal field, Delta and Gunnison counties, Colorado;Carroll,2004
4. Sand-body architecture in the lower Williams Fork Formation (Upper Cretaceous), Coal Canyon, Colorado, with comparison to the Piceance Basin subsurface; Cretaceous sand body geometries in the Piceance Basin area of northwest Colorado;Cole;The Mountain Geologist,2005
5. Collins B.A. 1976. Coal deposits of the Carbondale, Grand Hogback, and southern Danforth Hills coal fields, eastern Piceance basin, Colorado. Quarterly of the Colorado School of Mines, 71, (1).