APA (7th ed.) Citation

Cohen, D., & Jeavons, P. (2006). The complexity of constraint languages.

Chicago Style (17th ed.) Citation

Cohen, D., and P. Jeavons. The Complexity of Constraint Languages. 2006.

MLA (9th ed.) Citation

Cohen, D., and P. Jeavons. The Complexity of Constraint Languages. 2006.

Warning: These citations may not always be 100% accurate.