Willitts, J. (1992). Database design and construction: An open course for students and information managers. Library Association.
Chicago-viite (17. p.)Willitts, John. Database Design and Construction: An Open Course for Students and Information Managers. London: Library Association, 1992.
MLA-viite (9. p.)Willitts, John. Database Design and Construction: An Open Course for Students and Information Managers. Library Association, 1992.
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