Power system maintenance manual.
Chapter 13,
Standard maintenance guidelines - substations.

APA Citation

United States. Western Area Power Administration. (1992). Power system maintenance manual. [Golden, Colo.?]: Western Area Power Administration.

MLA Citation

United States. Western Area Power Administration. Power System Maintenance Manual. [Golden, Colo.?]: Western Area Power Administration, 1992.

Warning: These citations may not always be complete (especially for serials).