Soares' grounding electrical distribution systems for safetyWilford I. Summers · First published 1980Open the Tome
The National electrical code handbookJoseph A. Ross, Wilford I. Summers · First published 1980Open the Tome
American electricians' handbookTerrell Croft, Wilford I. Summers, Frederic P. Hartwell · First published 1913Open the Tome
