APA (7th ed.) Citation

Humby, E., & Robinson, P. B. (1980). Computer applications. Cassell.

Chicago Style (17th ed.) Citation

Humby, Edward, and Philip B. Robinson. Computer Applications. London: Cassell, 1980.

MLA (9th ed.) Citation

Humby, Edward, and Philip B. Robinson. Computer Applications. Cassell, 1980.