एपीए उद्धरण

Không rõ. (2007). Databases, Types, and the Relational Model. NOTNXB.

शिकागो स्टाइल उद्धरण

Không rõ. Databases, Types, and the Relational Model. NOTNXB, 2007.

एमएलए उद्धरण

Không rõ. Databases, Types, and the Relational Model. NOTNXB, 2007.