De Witt, Ed <br/><br/>
Chronology of late cretaceous igneous and hydrothermal events at the Golden Sunlight Gold-Silver Breccia Pipe, Southwestern Montana 
Ed De Witt ...(et. al.) 
 - Washington:  United States Government Printing Office,  1996 
 - iv, 48 p.:  ill.;  28 cm. 
 - U.S. Geological Survey Bulletin;  2155 .
<br/><br/>References p. 48 - 48