APA (7th ed.) Citation

Langley, G. (1986). Telephony's dictionary: Difining 16,000 telecommunication words and terms (2nd ed.). Telephony.

Chicago Style (17th ed.) Citation

Langley, Graham. Telephony's Dictionary: Difining 16,000 Telecommunication Words and Terms. 2nd ed. Chicago: Telephony, 1986.

MLA (9th ed.) Citation

Langley, Graham. Telephony's Dictionary: Difining 16,000 Telecommunication Words and Terms. 2nd ed. Telephony, 1986.

Warning: These citations may not always be 100% accurate.