Shelly, G. B., & Cashman, T. J. (1990). Learning to use WordPerfect, Lotus 1-2-3, and dBase III Plus. Boyd & Fraser.
芝加哥风格引文Shelly, Gary B., 与 Thomas J. Cashman. Learning to Use WordPerfect, Lotus 1-2-3, and DBase III Plus. [Boston, MA]: Boyd & Fraser, 1990.
MLA引文Shelly, Gary B., 与 Thomas J. Cashman. Learning to Use WordPerfect, Lotus 1-2-3, and DBase III Plus. Boyd & Fraser, 1990.
警告：这些引文格式不一定是100％准确.