Styl cytowania APA

Edwards, C., & Ward, J. (1996). The essence of information systems (2nd ed.). Prentice hall of India.

Styl cytowania Chicago

Edwards, Chris, i John Ward. The Essence of Information Systems. 2nd ed. New Delhi: Prentice hall of India, 1996.

Styl cytowania MLA

Edwards, Chris, i John Ward. The Essence of Information Systems. 2nd ed. Prentice hall of India, 1996.