APA (7th ed.) Citation

Merrill, G. K. (1975). Pennsylvanian conodont biostratigraphy and paleoecology of northwestern Illinois. Geological Society of America.

Chicago Style (17th ed.) Citation

Merrill, Glen K. Pennsylvanian Conodont Biostratigraphy and Paleoecology of Northwestern Illinois. Boulder, Colo.: Geological Society of America, 1975.

MLA (8th ed.) Citation

Merrill, Glen K. Pennsylvanian Conodont Biostratigraphy and Paleoecology of Northwestern Illinois. Geological Society of America, 1975.