N.E.M.A. handbook of appartus standards.
APA Citation
National Electrical Manufacturers Association. (1928). N.E.M.A. handbook of appartus standards. 17th ed., May, 1928. New York: National electrical manufacturers Association.
MLA Citation
National Electrical Manufacturers Association. N.E.M.A. Handbook of Appartus Standards. 17th ed., May, 1928. New York: National electrical manufacturers Association, 1928.
Warning: These citations may not always be complete (especially for serials).