Du Bray, E. A., & Snee, L. W. (2002). Composition, age, and petrogenesis of late Cretaceous intrusive rocks in the central Big Belt Mountains, Broadwater and Meagher counties, Montana. U.S. Dept. of the Interior, U.S. Geological Survey.
Chicago-referens (17:e uppl.)Du Bray, E. A., och Lawrence W. Snee. Composition, Age, and Petrogenesis of Late Cretaceous Intrusive Rocks in the Central Big Belt Mountains, Broadwater and Meagher Counties, Montana. [Reston, VA]: U.S. Dept. of the Interior, U.S. Geological Survey, 2002.
MLA-referens (9:e uppl.)Du Bray, E. A., och Lawrence W. Snee. Composition, Age, and Petrogenesis of Late Cretaceous Intrusive Rocks in the Central Big Belt Mountains, Broadwater and Meagher Counties, Montana. U.S. Dept. of the Interior, U.S. Geological Survey, 2002.