APA Style
National Electrical Code. (1989).
Illinois:
ATS.
Chicago Style
National Electrical Code.
11th ed..
Illinois:
ATS,
1989.
.
MLA Style
National Electrical Code.
11th ed..
Illinois:
ATS,
1989.
.
Turabian Style
National Electrical Code.
Illinois:
ATS,
1989.
.