Clapp Allen L. (1994). National electrical safety code handbook: A discussion of the grounding rules, general rules, and parts 1, 2, 3, and 4 of the 3rd (1920) through 1993 editions of the National electrical safety code, American national standard C2 (3rd ed.). IEEE Press.
Παραπομπή σε μορφή Chicago (17η εκδ.)Clapp Allen L. National Electrical Safety Code Handbook: A Discussion of the Grounding Rules, General Rules, and Parts 1, 2, 3, and 4 of the 3rd (1920) Through 1993 Editions of the National Electrical Safety Code, American National Standard C2. 3rd ed. IEEE Press, 1994.
Παραπομπή σε μορφή MLA (8th εκδ.)Clapp Allen L. National Electrical Safety Code Handbook: A Discussion of the Grounding Rules, General Rules, and Parts 1, 2, 3, and 4 of the 3rd (1920) Through 1993 Editions of the National Electrical Safety Code, American National Standard C2. 3rd ed. IEEE Press, 1994.