APA (7th ed.) Citation

Parker, E. W., Holmes, J. A., & Campbell, M. R. (1906). ... Report on the operations of the coal-testing plant of the United States Geological survey at the Louisiana purchase exposition: St. Louis, Mo., 1904 ... Govt. print. off.

Chicago Style (17th ed.) Citation

Parker, Edward W., J. A. Holmes, and Marius Robinson Campbell. ... Report on the Operations of the Coal-testing Plant of the United States Geological Survey at the Louisiana Purchase Exposition: St. Louis, Mo., 1904 ... Washington: Govt. print. off, 1906.

MLA (9th ed.) Citation

Parker, Edward W., et al. ... Report on the Operations of the Coal-testing Plant of the United States Geological Survey at the Louisiana Purchase Exposition: St. Louis, Mo., 1904 ... Govt. print. off, 1906.