APA (7th ed.) Citation

Harrington, D., Warncke, R. G., & Mines, U. S. B. o. (1944). Precautions to be taken when approaching old mine workings. U.S. Dept. of the Interior, Bureau of Mines.

Chicago Style (17th ed.) Citation

Harrington, D., R. G. Warncke, and United States. Bureau of Mines. Precautions to Be Taken When Approaching Old Mine Workings. U.S. Dept. of the Interior, Bureau of Mines, 1944.

MLA (8th ed.) Citation

Harrington, D., et al. Precautions to Be Taken When Approaching Old Mine Workings. U.S. Dept. of the Interior, Bureau of Mines, 1944.