APA (7th ed.) Citation

Abdul Razak, M. A. (1991). A digital voice/data telephone/ Mohd. Afendi Abdul Razak.

Chicago Style (17th ed.) Citation

Abdul Razak, Mohd. Afendi. A Digital Voice/data Telephone/ Mohd. Afendi Abdul Razak. 1991.

MLA (9th ed.) Citation

Abdul Razak, Mohd. Afendi. A Digital Voice/data Telephone/ Mohd. Afendi Abdul Razak. 1991.

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