CHORAFAS, D. N. TELEPHONY TODAY & TOMORROW. PRENTICE - HALL.
Chicagoスタイル(17版)引用形式CHORAFAS, D. N. TELEPHONY TODAY & TOMORROW. ENGLEWOOD: PRENTICE - HALL.
MLA(9版)引用形式CHORAFAS, D. N. TELEPHONY TODAY & TOMORROW. PRENTICE - HALL.
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