Παραπομπή APA

(1954). Automatic change-over contactors for emergency lighting systems. London: British Standards Institution.

Παραπομπή Chicago Style

Automatic Change-over Contactors for Emergency Lighting Systems. London: British Standards Institution, 1954.

Παραπομπή MLA

Automatic Change-over Contactors for Emergency Lighting Systems. London: British Standards Institution, 1954.

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