Elements of Petroleum GeologyRichard C. Selley, Stephen A. Sonnenberg · First published 1997Open the Tome
Morrow sandstones of southeast Colorado and adjacent areasStephen A. Sonnenberg · First published 1990Open the Tome
Tectonics, sedimentation and petroleum potential, Northern Denver Basin, Colorado, Wyoming and NebraskaStephen A. Sonnenberg · First published 1981Open the Tome
