Cita APA (7a ed.)

Date, C. (1977). An Introduction to database systems. Addison-Wesley Publishing Company.

Cita Chicago Style (17a ed.)

Date, C.J. An Introduction to Database Systems. Addison-Wesley Publishing Company, 1977.

Cita MLA (8a ed.)

Date, C.J. An Introduction to Database Systems. Addison-Wesley Publishing Company, 1977.