APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Date, C. J. An Introduction to Database Systems. Reading, Massachusetts [etc.]: Addison-Wesley, 1981.

MLA (9th ed.) Citation

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

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