Date, C. J., & Darwen, H. (1997). A guide to the SQL standard: A user's guide to the standard relational language SQL ; [covers CLI and PSM] (4. ed., repr. with corr.). Addison-Wesley.
Chicago Style (17th ed.) CitationDate, Chris J., and Hugh Darwen. A Guide to the SQL Standard: A User's Guide to the Standard Relational Language SQL ; [covers CLI and PSM]. 4. ed., repr. with corr. Reading, Mass. u.a: Addison-Wesley, 1997.
MLA (9th ed.) CitationDate, Chris J., and Hugh Darwen. A Guide to the SQL Standard: A User's Guide to the Standard Relational Language SQL ; [covers CLI and PSM]. 4. ed., repr. with corr. Addison-Wesley, 1997.
Warning: These citations may not always be 100% accurate.