(1961). Specification for protected-type non-reversible plugs, socket-outlets cable-couplers and appliance -couplers with earthing contacts: For single phase a.c. circuits up to 250 volts. London: British Standards Institution.
Παραπομπή Chicago StyleSpecification for Protected-type Non-reversible Plugs, Socket-outlets Cable-couplers and Appliance -couplers With Earthing Contacts: For Single Phase A.c. Circuits Up to 250 Volts. London: British Standards Institution, 1961.
Παραπομπή MLASpecification for Protected-type Non-reversible Plugs, Socket-outlets Cable-couplers and Appliance -couplers With Earthing Contacts: For Single Phase A.c. Circuits Up to 250 Volts. London: British Standards Institution, 1961.
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