Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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