APA (7th ed.) Citation

Longley, D. (1985). Macmillan dictionary of information technolog (3rd. ed.). Macmillan Reference Books.

Chicago Style (17th ed.) Citation

Longley, Dennis. Macmillan Dictionary of Information Technolog. 3rd. ed. London: Macmillan Reference Books, 1985.

MLA (9th ed.) Citation

Longley, Dennis. Macmillan Dictionary of Information Technolog. 3rd. ed. Macmillan Reference Books, 1985.