Boyle, E. H., Shields, D., & Wagner, L. (1991). Chromium availability in market economy countries and network flow model analysis of world chromium supply. U.S. Dept. of the Interior, Bureau of Mines.
Chicago Style (17th ed.) CitationBoyle, Edward H., Deborah Shields, and Lorie Wagner. Chromium Availability in Market Economy Countries and Network Flow Model Analysis of World Chromium Supply. Washington, D.C.: U.S. Dept. of the Interior, Bureau of Mines, 1991.
MLA (9th ed.) CitationBoyle, Edward H., et al. Chromium Availability in Market Economy Countries and Network Flow Model Analysis of World Chromium Supply. U.S. Dept. of the Interior, Bureau of Mines, 1991.
Warning: These citations may not always be 100% accurate.