Cita APA (7th ed.)

Date, C. J. (1995). An introduction to database systems (6a. ed.). Addison-Wesley Publishing Company.

Cita Chicago (17th ed.)

Date, C. J. An Introduction to Database Systems. 6a. ed. Nueva York: Addison-Wesley Publishing Company, 1995.

Cita MLA (9th ed.)

Date, C. J. An Introduction to Database Systems. 6a. ed. Addison-Wesley Publishing Company, 1995.