APA Edition Citation

Marakas, G. M. (2008). Decision Support systems in the 21st Century (2 edition.).

Chicago Edition Citation

Marakas, George M. Decision Support Systems in the 21st Century. 2 edition. Pearson Education, 2008.

MLA Edition Citation

Marakas, George M. Decision Support Systems in the 21st Century. 2 edition. 2008.