(1989). Lake Superior Basin segment of the Midcontinent rift system: Lake Superior Basin (Minnesota, Wisconsin, Michigan), July 20 - 25, 1989. American Geophysical Union.
Chicago-Zitierstil (17. Ausg.)Lake Superior Basin Segment of the Midcontinent Rift System: Lake Superior Basin (Minnesota, Wisconsin, Michigan), July 20 - 25, 1989. Washington, DC: American Geophysical Union, 1989.
MLA-Zitierstil (9. Ausg.)Lake Superior Basin Segment of the Midcontinent Rift System: Lake Superior Basin (Minnesota, Wisconsin, Michigan), July 20 - 25, 1989. American Geophysical Union, 1989.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.