Olson, D. W. Industrial arts for the general shop (3a ed.).
Cita Chicago (17th ed.)Olson, Delmar W. Industrial Arts for the General Shop. 3a ed.
Cita MLA (8th ed.)Olson, Delmar W. Industrial Arts for the General Shop. 3a ed.
Atenció: Aquestes cites poden no estar 100% correctes.