APA (7th ed.) Citation

Simpson, A., & McComb, G. (1999). Mastering WordPerfect 9. SYBEX.

Chicago Style (17th ed.) Citation

Simpson, Alan, and Gordon McComb. Mastering WordPerfect 9. San Francisco: SYBEX, 1999.

MLA (8th ed.) Citation

Simpson, Alan, and Gordon McComb. Mastering WordPerfect 9. SYBEX, 1999.

Warning: These citations may not always be 100% accurate.