MLA

Hofman, H. O. Metallurgy of Copper. New York [etc.]: McGraw-Hill book company, inc., 1914.

APA

Hofman, H. O. (1914). Metallurgy of copper. New York [etc.]: McGraw-Hill book company, inc.

Chicago

Hofman, H. O. Metallurgy of Copper. New York [etc.]: McGraw-Hill book company, inc., 1914.