Panama-Pacific International Exposition San Francisco, Calif. (1915). Mines and metallurgy: Official catalogue of exhibitors : Panama-Pacific International Exposition, San Francisco, 1915 ([Preliminary ed.].). Wahlgreen Co..
Chicago-referens (17:e uppl.)Panama-Pacific International Exposition San Francisco, Calif. Mines and Metallurgy: Official Catalogue of Exhibitors : Panama-Pacific International Exposition, San Francisco, 1915. [Preliminary ed.]. San Francisco: Wahlgreen Co., 1915.
MLA-referens (8:e uppl.)Panama-Pacific International Exposition San Francisco, Calif. Mines and Metallurgy: Official Catalogue of Exhibitors : Panama-Pacific International Exposition, San Francisco, 1915. [Preliminary ed.]. Wahlgreen Co., 1915.
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