Simpson, A. (1992). Mastering WordPerfect 5.1 for Windows. SYBEX.
Chicago Style (17th ed.) CitationSimpson, Alan. Mastering WordPerfect 5.1 for Windows. San Francisco: SYBEX, 1992.
MLA引文Simpson, Alan. Mastering WordPerfect 5.1 for Windows. SYBEX, 1992.
警告:這些引文格式不一定是100%准確.