Peppers, R. A. (1993). Correlation of the "Boskydell Sandstone" and other sandstones containing marine fossils in southern Illinois using palynology of adjacent coal beds.
Chicago-Zitierstil (17. Ausg.)Peppers, Russel Allen. Correlation of the "Boskydell Sandstone" and Other Sandstones Containing Marine Fossils in Southern Illinois Using Palynology of Adjacent Coal Beds. Champaign, Ill, 1993.
MLA-Zitierstil (9. Ausg.)Peppers, Russel Allen. Correlation of the "Boskydell Sandstone" and Other Sandstones Containing Marine Fossils in Southern Illinois Using Palynology of Adjacent Coal Beds. 1993.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.