Guide to the 1968 National electrical code,
by Roland F. Palmquist.
APA Citation
Palmquist, R. E., National Fire Protection Association. (1969). Guide to the 1968 National electrical code. [2d ed.]. Indianapolis: T. Audel.
MLA Citation
Palmquist, Roland E, and National Fire Protection Association. Guide to the 1968 National Electrical Code. [2d ed.]. Indianapolis: T. Audel, 1969.
Warning: These citations may not always be complete (especially for serials).