(1958). Voltages for A.C. transmission and distribution systems. London: British Standards Institution.
Παραπομπή Chicago StyleVoltages for A.C. Transmission and Distribution Systems. London: British Standards Institution, 1958.
Παραπομπή MLAVoltages for A.C. Transmission and Distribution Systems. London: British Standards Institution, 1958.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.