Celko, J. (2007). Joe Celko's SQL puzzles and answers. Amsterdam: Epsevier.
Chicago Style aipamenaCelko, Joe. Joe Celko's SQL Puzzles and Answers. Amsterdam: Epsevier, 2007.
MLA aipamenaCelko, Joe. Joe Celko's SQL Puzzles and Answers. Amsterdam: Epsevier, 2007.
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