Cita APA (7a ed.)

Gray, A. (1947). Principles and practice of electrical engineering. McGraw-Hill.

Cita Chicago Style (17a ed.)

Gray, Alexander. Principles and Practice of Electrical Engineering. New York, London: McGraw-Hill, 1947.

Cita MLA (8a ed.)

Gray, Alexander. Principles and Practice of Electrical Engineering. McGraw-Hill, 1947.