Westerkamp, T. A. (1993). Maintenance manager's standard manual. Prentice Hall.
Cita Chicago (17th ed.)Westerkamp, Thomas A. Maintenance Manager's Standard Manual. Englewood Cliffs, NJ: Prentice Hall, 1993.
Cita MLA (9th ed.)Westerkamp, Thomas A. Maintenance Manager's Standard Manual. Prentice Hall, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.