APA aipamena

JOLLEY,E.H. (1989). INTRO TO TELEPHONY & TELEGRAPHY. WHEELER & CO.

Chicago Style aipamena

JOLLEY,E.H. INTRO TO TELEPHONY & TELEGRAPHY. ALLAHABAD: WHEELER & CO, 1989.

MLA aipamena

JOLLEY,E.H. INTRO TO TELEPHONY & TELEGRAPHY. WHEELER & CO, 1989.