Cita APA (7th ed.)

De Pace, M. (1989). dBase IV: A practical guide. Toppan.

Cita Chicago (17th ed.)

De Pace, Mario. DBase IV: A Practical Guide. Singapore: Toppan, 1989.

Cita MLA (9th ed.)

De Pace, Mario. DBase IV: A Practical Guide. Toppan, 1989.