APA (7th ed.) Citation

Hume, J. (1990). Introduction to computer science ... (2nd.ed.). HSA.

Chicago Style (17th ed.) Citation

Hume, J.N.P. Introduction to Computer Science ... 2nd.ed. Toronto: HSA, 1990.

MLA (9th ed.) Citation

Hume, J.N.P. Introduction to Computer Science ... 2nd.ed. HSA, 1990.