Celko, J. (2012). Joe Celko's Trees and hierarchies in SQL for smarties (Second edition.). Elsevier/Morgan Kaufmann.
Chicagoスタイル(17版)引用形式Celko, Joe. Joe Celko's Trees and Hierarchies in SQL for Smarties. Second edition. Amsterdam ; Boston: Elsevier/Morgan Kaufmann, 2012.
MLA(9版)引用形式Celko, Joe. Joe Celko's Trees and Hierarchies in SQL for Smarties. Second edition. Elsevier/Morgan Kaufmann, 2012.
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