APA (7th ed.) Citation

Durkin, J., & Greenfield, R. (1981). Evaluation of the seismic system for locating trapped miners. U.S. Dept. of the Interior, Bureau of Mines.

Chicago Style (17th ed.) Citation

Durkin, John, and Roy Greenfield. Evaluation of the Seismic System for Locating Trapped Miners. [Washington, D.C.?]: U.S. Dept. of the Interior, Bureau of Mines, 1981.

MLA (9th ed.) Citation

Durkin, John, and Roy Greenfield. Evaluation of the Seismic System for Locating Trapped Miners. U.S. Dept. of the Interior, Bureau of Mines, 1981.