APA (7th ed.) Citation

United States. Bureau of Mines & McCulloch, C. M. (1975). Selected geologic factors affecting mining of the Pittsburgh coalbed. U.S. Dept. of the Interior, Bureau of Mines.

Chicago Style (17th ed.) Citation

United States. Bureau of Mines and C. M. McCulloch. Selected Geologic Factors Affecting Mining of the Pittsburgh Coalbed. [Washington]: U.S. Dept. of the Interior, Bureau of Mines, 1975.

MLA (9th ed.) Citation

United States. Bureau of Mines and C. M. McCulloch. Selected Geologic Factors Affecting Mining of the Pittsburgh Coalbed. U.S. Dept. of the Interior, Bureau of Mines, 1975.