APA (7th ed.) Citation

Philip, C. (1989). dBase IV: Developer's reference guide. Management Information Source, Inc.

Chicago Style (17th ed.) Citation

Philip, Cliff. DBase IV: Developer's Reference Guide. Portland, Or: Management Information Source, Inc, 1989.

MLA (9th ed.) Citation

Philip, Cliff. DBase IV: Developer's Reference Guide. Management Information Source, Inc, 1989.

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