American Geophysical Union, International Geological Congress, & Hearn, B. C., Jr. (1989). Montana high-potassium igneous province: Crazy Mountains to Jordan, Montana, June 20-27, 1989. American Geophysical Union.
Chicago Style (17th ed.) CitationAmerican Geophysical Union, International Geological Congress, and B. C. Hearn, Jr. Montana High-potassium Igneous Province: Crazy Mountains to Jordan, Montana, June 20-27, 1989. Washington, D.C.: American Geophysical Union, 1989.
MLA (9th ed.) CitationAmerican Geophysical Union, et al. Montana High-potassium Igneous Province: Crazy Mountains to Jordan, Montana, June 20-27, 1989. American Geophysical Union, 1989.
Warning: These citations may not always be 100% accurate.