APA (7th ed.) Citation

Date, C. J. (1981). An introduction to database systems (3rd ed.). Addison-Wesley.

Chicago Style (17th ed.) Citation

Date, C. J. An Introduction to Database Systems. 3rd ed. Reading, Mass: Addison-Wesley, 1981.

MLA (9th ed.) Citation

Date, C. J. An Introduction to Database Systems. 3rd ed. Addison-Wesley, 1981.