Cita APA (7a ed.)

Beynon-Davies, P. (1991). Expert database systems: A gentle introduction. McGraw-Hill.

Cita Chicago Style (17a ed.)

Beynon-Davies, Paul. Expert Database Systems: A Gentle Introduction. London [etc.]: McGraw-Hill, 1991.

Cita MLA (9a ed.)

Beynon-Davies, Paul. Expert Database Systems: A Gentle Introduction. McGraw-Hill, 1991.