APA ציטוט

Codd, E. F. (1990). The relational model for database management: Version 2. Addison-Wesley.

Chicago Style (17th ed.) Citation

Codd, E. F. The Relational Model for Database Management: Version 2. Reading: Addison-Wesley, 1990.

ציטוט MLA

Codd, E. F. The Relational Model for Database Management: Version 2. Addison-Wesley, 1990.