Duke, R. (2000). Formal object-oriented specification using object-Z. Basingstoke: Macmillan.
Trích dẫn kiểu ChicagoDuke, Roger. Formal Object-oriented Specification Using Object-Z. Basingstoke: Macmillan, 2000.
MLA citiranjeDuke, Roger. Formal Object-oriented Specification Using Object-Z. Basingstoke: Macmillan, 2000.
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