Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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