Cita APA (7a ed.)

Croft, T. W., & Hall, G. (1939). Practical electric illumination and signal-wiring methods (3rd ed.). McGraw-Hill.

Cita Chicago Style (17a ed.)

Croft, Terrell Williams, y George Hall. Practical Electric Illumination and Signal-wiring Methods. 3rd ed. New York: McGraw-Hill, 1939.

Cita MLA (9a ed.)

Croft, Terrell Williams, y George Hall. Practical Electric Illumination and Signal-wiring Methods. 3rd ed. McGraw-Hill, 1939.