Grauer, R. T., & Barber, M. M. Database management through dBASE.
Cita Chicago (17th ed.)Grauer, Robert T., i Maryann M. Barber. Database Management Through DBASE.
Cita MLA (9th ed.)Grauer, Robert T., i Maryann M. Barber. Database Management Through DBASE.
Atenció: Aquestes cites poden no estar 100% correctes.