APA (7th ed.) Citation

SIMPSON ALAN. (1989). UNDERSTANDING DBASE IV. BPB PUBLICATIONS.

Chicago Style (17th ed.) Citation

SIMPSON ALAN. UNDERSTANDING DBASE IV. DELHI: BPB PUBLICATIONS, 1989.

MLA (9th ed.) Citation

SIMPSON ALAN. UNDERSTANDING DBASE IV. BPB PUBLICATIONS, 1989.

Warning: These citations may not always be 100% accurate.