Cita APA

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

Citación estilo Chicago

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

Cita MLA

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

Warning: These citations may not always be 100% accurate.