Não informado. (1956). Transactions of the American Institute of Mining, Metallurgical and Petroleum Engineers. American Institute of Mining, Metallurgical and Petroleum Engineers.
Lua i Stíl Chicago (17ú heag.)Não informado. Transactions of the American Institute of Mining, Metallurgical and Petroleum Engineers. New York: American Institute of Mining, Metallurgical and Petroleum Engineers, 1956.
Lua MLA (8ú heag.)Não informado. Transactions of the American Institute of Mining, Metallurgical and Petroleum Engineers. American Institute of Mining, Metallurgical and Petroleum Engineers, 1956.
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