Houghton, P. S. (1941). Press tool practice. Chapman & Hall.
Cita Chicago (17th ed.)Houghton, Philip Stephen. Press Tool Practice. London: Chapman & Hall, 1941.
Cita MLA (8th ed.)Houghton, Philip Stephen. Press Tool Practice. Chapman & Hall, 1941.
Atenció: Aquestes cites poden no estar 100% correctes.