The principles of copper smelting,

MLA

Peters, Edward Dyer. The Principles of Copper Smelting. New York [etc.]: Hill Publishing Company, 1907.

APA

Peters, E. Dyer. (1907). The principles of copper smelting. New York [etc.]: Hill Publishing Company.

Chicago

Peters, Edward Dyer, The Principles of Copper Smelting,. New York [etc.]: Hill Publishing Company, 1907.