Cita APA (7a ed.)

Holt, C. M. (1999). Understanding NEC calculations (3rd ed.).

Cita Chicago Style (17a ed.)

Holt, Charles Michael. Understanding NEC Calculations. 3rd ed. Albany : Delmar Publishers, 1999.

Cita MLA (9a ed.)

Holt, Charles Michael. Understanding NEC Calculations. 3rd ed. 1999.