एपीए उद्धरण

Chorafas, D. N. (1984). Telephony Today and Tomorrow. Prentice-Hall of India.

शिकागो स्टाइल उद्धरण

Chorafas, Dimiris. N. Telephony Today and Tomorrow. Englewood Cliffs: Prentice-Hall of India, 1984.

एमएलए उद्धरण

Chorafas, Dimiris. N. Telephony Today and Tomorrow. Prentice-Hall of India, 1984.