Date, C. J. (1989). A guide to the SQL standard: A user's guide to the standard relational language SQL (2nd ed.). Addison-Wesley.
Chicago Style (17th ed.) CitationDate, C. J. A Guide to the SQL Standard: A User's Guide to the Standard Relational Language SQL. 2nd ed. Reading, Massachusetts [etc.]: Addison-Wesley, 1989.
MLA (9th ed.) CitationDate, C. J. A Guide to the SQL Standard: A User's Guide to the Standard Relational Language SQL. 2nd ed. Addison-Wesley, 1989.
Warning: These citations may not always be 100% accurate.