Não informado. (1949). Mining transactions. American Institute of Mining, Metallurgical and Petroleum Engineers.
Chicago-Zitierstil (17. Ausg.)Não informado. Mining Transactions. New York: American Institute of Mining, Metallurgical and Petroleum Engineers, 1949.
MLA-Zitierstil (8. Ausg.)Não informado. Mining Transactions. American Institute of Mining, Metallurgical and Petroleum Engineers, 1949.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.