APA-referens (7:e uppl.)

International conference on principles and practice of constraint programming :Alexandria, Va., & Jaffar, J. Principles and practice of constraint programming CP 99: 5th international conference, CP'99, Alexandria,VA, USA, October 11-14, 1999 : proceedings. Springer.

Chicago-referens (17:e uppl.)

International conference on principles and practice of constraint programming :Alexandria, Va., och Joxan Jaffar. Principles and Practice of Constraint Programming CP 99: 5th International Conference, CP'99, Alexandria,VA, USA, October 11-14, 1999 : Proceedings. Berlin [etc.]: Springer.

MLA-referens (8:e uppl.)

International conference on principles and practice of constraint programming :Alexandria, Va., och Joxan Jaffar. Principles and Practice of Constraint Programming CP 99: 5th International Conference, CP'99, Alexandria,VA, USA, October 11-14, 1999 : Proceedings. Springer.

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