Oppel, A. J. (2009). SQL: A beginner’s guide. McGraw-Hill.
Trích dẫn kiểu ChicagoOppel, Andrew J. SQL: A Beginner’s Guide. McGraw-Hill, 2009.
MLA citiranjeOppel, Andrew J. SQL: A Beginner’s Guide. McGraw-Hill, 2009.
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