APA (7th ed.) Citation

Sullivan, J. D. (1931). Factors involved in heap leaching of copper ores. [publisher not identified].

Chicago Style (17th ed.) Citation

Sullivan, John D. Factors Involved in Heap Leaching of Copper Ores. Washington, D.C.: [publisher not identified], 1931.

MLA (9th ed.) Citation

Sullivan, John D. Factors Involved in Heap Leaching of Copper Ores. [publisher not identified], 1931.