Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.