Ng, W. An extension of the relational data model to incorporate ordered domains. ACM transactions on database systems..
Citazione stile Chigago Style (17a edizione)Ng, Wilfred. "An Extension of the Relational Data Model to Incorporate Ordered Domains." ACM Transactions on Database Systems. .
Citatione MLA (9a ed.)Ng, Wilfred. "An Extension of the Relational Data Model to Incorporate Ordered Domains." ACM Transactions on Database Systems., .
Attenzione: Queste citazioni potrebbero non essere precise al 100%.