Παραπομπή σε μορφή APA (7η εκδ.)

Ng, W. An extension of the relational data model to incorporate ordered domains. ACM transactions on database systems..

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ng, Wilfred. "An Extension of the Relational Data Model to Incorporate Ordered Domains." ACM Transactions on Database Systems. .

Παραπομπή σε μορφή MLA (9th εκδ.)

Ng, Wilfred. "An Extension of the Relational Data Model to Incorporate Ordered Domains." ACM Transactions on Database Systems., .