Earl, J. T. (1986). Guidebook for electrical inspection. Prentice-Hall.
Cita Chicago (17th ed.)Earl, John T. Guidebook for Electrical Inspection. Englewood Cliffs: Prentice-Hall, 1986.
Cita MLA (9th ed.)Earl, John T. Guidebook for Electrical Inspection. Prentice-Hall, 1986.
Atenció: Aquestes cites poden no estar 100% correctes.