Cita APA (7th ed.)

GARRISON, C., & MCGOWEN, M. A. (1990). Dbase IV: A ready reference manual. Addison-Wesley Pub.

Cita Chicago (17th ed.)

GARRISON, Catherine, i Mercedes A. MCGOWEN. Dbase IV: A Ready Reference Manual. Reading: Addison-Wesley Pub, 1990.

Cita MLA (9th ed.)

GARRISON, Catherine, i Mercedes A. MCGOWEN. Dbase IV: A Ready Reference Manual. Addison-Wesley Pub, 1990.