APA引文

William S David. (1990). Computing fundamentals dBASE IV. Redwood City, California: Benjamins and Cummings.

Trích dẫn kiểu Chicago

William S David. Computing Fundamentals DBASE IV. Redwood City, California: Benjamins and Cummings, 1990.

MLA引文

William S David. Computing Fundamentals DBASE IV. Redwood City, California: Benjamins and Cummings, 1990.

警告：這些引文格式不一定是100％准確.