Croft, T. (1981). American electricians' handbook (10th ed.). New York: McGraw-Hill Book Company.
Παραπομπή Chicago StyleCroft, Terrell. American Electricians' Handbook. 10th ed. New York: McGraw-Hill Book Company, 1981.
Παραπομπή MLACroft, Terrell. American Electricians' Handbook. 10th ed. New York: McGraw-Hill Book Company, 1981.
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