RICHARD & LITTLE, S. (1979). The basic book of metalworking. American Technical.
Cita Chicago (17th ed.)RICHARD i Sherly LITTLE. The Basic Book of Metalworking. Illinois: American Technical, 1979.
Cita MLA (9th ed.)RICHARD i Sherly LITTLE. The Basic Book of Metalworking. American Technical, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.