Não informado. (1930). Engineering and mining world. McGraw-Hill Publications.
Style de citation Chicago (17e éd.)Não informado. Engineering and Mining World. New York: McGraw-Hill Publications, 1930.
Style de citation MLA (8e éd.)Não informado. Engineering and Mining World. McGraw-Hill Publications, 1930.
Attention : ces citations peuvent ne pas être correctes à 100%.