Cita APA (7a ed.)
Ullman, J. D. (1988). Principles of Database and Knowledge-Base Systems: Volume I: Classical Database Systems. Computer Science Press.
Cita Chicago Style (17a ed.)
Ullman, Jeffrey D. Principles of Database and Knowledge-Base Systems: Volume I: Classical Database Systems. Rockville: Computer Science Press, 1988.
Cita MLA (9a ed.)
Ullman, Jeffrey D. Principles of Database and Knowledge-Base Systems: Volume I: Classical Database Systems. Computer Science Press, 1988.
Precaución: Estas citas no son 100% exactas.