APA (7th ed.) Citation

Geological Society of America. North-Central Section, Decade of North American Geology Project, & Biggs, D. L. (1987). North-Central Section of the Geological Society of America. Geological Society of America.

Chicago Style (17th ed.) Citation

Geological Society of America. North-Central Section, Decade of North American Geology Project, and Donald L. Biggs. North-Central Section of the Geological Society of America. Boulder, Colo.: Geological Society of America, 1987.

MLA (9th ed.) Citation

Geological Society of America. North-Central Section, et al. North-Central Section of the Geological Society of America. Geological Society of America, 1987.