Bergstrom, D. J., & Morey, G. B. (1985). Correlation of stratigraphic units in North America: Northern Mid-Continent region correlation chart. America association of Petroleum Geologists.
Chicago Style (17th ed.) CitationBergstrom, D. J., and G. B. Morey. Correlation of Stratigraphic Units in North America: Northern Mid-Continent Region Correlation Chart. Tulsa, Okla.: America association of Petroleum Geologists, 1985.
MLA (9th ed.) CitationBergstrom, D. J., and G. B. Morey. Correlation of Stratigraphic Units in North America: Northern Mid-Continent Region Correlation Chart. America association of Petroleum Geologists, 1985.
Warning: These citations may not always be 100% accurate.