(1989). Carboniferous geology of the Eastern United States: St. Louis, Missouri to Washington, D.C., June 28 - July 8, 1989. American Geophysical Union.
Chicago-Zitierstil (17. Ausg.)Carboniferous Geology of the Eastern United States: St. Louis, Missouri to Washington, D.C., June 28 - July 8, 1989. Washington, DC: American Geophysical Union, 1989.
MLA-Zitierstil (9. Ausg.)Carboniferous Geology of the Eastern United States: St. Louis, Missouri to Washington, D.C., June 28 - July 8, 1989. American Geophysical Union, 1989.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.