Παραπομπή APA

Date,C.J. (1994). An introduction to database systems.- 6th Ed (6th ed.). Addison-Wesley publishing.

Παραπομπή Chicago Style

Date,C.J. An Introduction to Database Systems.- 6th Ed. 6th ed. USA: Addison-Wesley publishing, 1994.

Παραπομπή MLA

Date,C.J. An Introduction to Database Systems.- 6th Ed. 6th ed. Addison-Wesley publishing, 1994.