APA-viite (7. p.)

<LELER, W. Constraint programming languages ; their specification and generation. Addison-Wesley, Co.

Chicago-viite (17. p.)

<LELER, William>. Constraint Programming Languages ; Their Specification and Generation. Addison-Wesley, Co.

MLA-viite (8. p.)

<LELER, William>. Constraint Programming Languages ; Their Specification and Generation. Addison-Wesley, Co.

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