Cita APA (7th ed.)

Simpson, A. (1992). Mastering WordPerfect 5.1 for Windows. SYBEX.

Cita Chicago (17th ed.)

Simpson, Alan. Mastering WordPerfect 5.1 for Windows. San Francisco: SYBEX, 1992.

Cita MLA (9th ed.)

Simpson, Alan. Mastering WordPerfect 5.1 for Windows. SYBEX, 1992.

Atenció: Aquestes cites poden no estar 100% correctes.