Cita APA (7th ed.)

Cooper, W. F. (1986). Electrical safety engineering (2nd ed.). Butterworths.

Cita Chicago (17th ed.)

Cooper, W. Fordham. Electrical Safety Engineering. 2nd ed. London ; Boston: Butterworths, 1986.

Cita MLA (8th ed.)

Cooper, W. Fordham. Electrical Safety Engineering. 2nd ed. Butterworths, 1986.