APA-viite (7. p.)

Cohen, D., Cooper, M., Jeavons, P., & Krokhin, A. (2004). A maximal tractable class of soft constraints.

Chicago-viite (17. p.)

Cohen, D., M. Cooper, P. Jeavons, ja A. Krokhin. A Maximal Tractable Class of Soft Constraints. 2004.

MLA-viite (9. p.)

Cohen, D., et al. A Maximal Tractable Class of Soft Constraints. 2004.