APA (7th ed.) Citation

Krickovic, S., Moore, T. D., & Carpetta, J. E. (1973). Bleeder system in virgin area in a Pittsburgh coalbed mine. U.S. Dept. of the Interior, Bureau of Mines.

Chicago Style (17th ed.) Citation

Krickovic, Stephen, T. D. Moore, and J. E. Carpetta. Bleeder System in Virgin Area in a Pittsburgh Coalbed Mine. [Pittsburg, Pa.]: U.S. Dept. of the Interior, Bureau of Mines, 1973.

MLA (9th ed.) Citation

Krickovic, Stephen, et al. Bleeder System in Virgin Area in a Pittsburgh Coalbed Mine. U.S. Dept. of the Interior, Bureau of Mines, 1973.