APA (7th ed.) Citation

Smith, S. F. (1969). Telephony & telegraphy A: An introduction to telephone and telegraph instruments and exchanges. Oxford U.P.

Chicago Style (17th ed.) Citation

Smith, Sydney F. Telephony & Telegraphy A: An Introduction to Telephone and Telegraph Instruments and Exchanges. London: Oxford U.P, 1969.

MLA (8th ed.) Citation

Smith, Sydney F. Telephony & Telegraphy A: An Introduction to Telephone and Telegraph Instruments and Exchanges. Oxford U.P, 1969.