Mast, R. F., Ruch, R. R., & Meents, W. F. (1973). Vanadium in Devonian, Silurian, and Ordovician crude oils of Illinois. Illinois State Geological Survey.
Chicago Style (17th ed.) CitationMast, R. F., R. R. Ruch, and Wayne Franklin Meents. Vanadium in Devonian, Silurian, and Ordovician Crude Oils of Illinois. Urbana: Illinois State Geological Survey, 1973.
MLA (9th ed.) CitationMast, R. F., et al. Vanadium in Devonian, Silurian, and Ordovician Crude Oils of Illinois. Illinois State Geological Survey, 1973.
Warning: These citations may not always be 100% accurate.