Vang, S. (1991). SQL and relational databases. Microtrend Books.
Chicago Style (17th ed.) CitationVang, Soren. SQL and Relational Databases. San Marcos, Calif: Microtrend Books, 1991.
MLA (9th ed.) CitationVang, Soren. SQL and Relational Databases. Microtrend Books, 1991.
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