Simpson, A. (1987). dBase III plus: Programmer's reference guide. Sybex.
芝加哥风格引文Simpson, Alan. DBase III Plus: Programmer's Reference Guide. San Francisco: Sybex, 1987.
MLA引文Simpson, Alan. DBase III Plus: Programmer's Reference Guide. Sybex, 1987.
警告：这些引文格式不一定是100％准确.