Electrical & electronic signs & symbols,
by Robert G. Middleton.
APA Citation
Middleton, R. Gordon. (1968). Electrical & electronic signs & symbols. [1st ed.] Indianapolis: H. W. Sams.
MLA Citation
Middleton, Robert Gordon, 1908-. Electrical & Electronic Signs & Symbols. [1st ed.] Indianapolis: H. W. Sams, 1968.
Warning: These citations may not always be complete (especially for serials).