Eckel, E. C., & Burchard, E. F. (1913). Portland cement materials and industry in the United States. Department of the Interior, United States Geological Survey.
Chicago Style (17th ed.) CitationEckel, Edwin C., and Ernest F. 1875-1961 Burchard. Portland Cement Materials and Industry in the United States. [Washington, D.C.]: Department of the Interior, United States Geological Survey, 1913.
MLA (8th ed.) CitationEckel, Edwin C., and Ernest F. 1875-1961 Burchard. Portland Cement Materials and Industry in the United States. Department of the Interior, United States Geological Survey, 1913.
Warning: These citations may not always be 100% accurate.