APA (7th ed.) Citation

Witzig, T. J. (1981). Operation of the International Tin Agreement. U.S. Dept. of the Interior, Bureau of Mines.

Chicago Style (17th ed.) Citation

Witzig, Thomas J. Operation of the International Tin Agreement. [Washington, D.C.?]: U.S. Dept. of the Interior, Bureau of Mines, 1981.

MLA (9th ed.) Citation

Witzig, Thomas J. Operation of the International Tin Agreement. U.S. Dept. of the Interior, Bureau of Mines, 1981.