APA (7th ed.) Citation

Nielsen, J. J. (1992). 1-2-3 Release 2.4 quick reference. Que Corp..

Chicago Style (17th ed.) Citation

Nielsen, Joyce J. 1-2-3 Release 2.4 Quick Reference. Carmel, IN: Que Corp., 1992.

MLA (8th ed.) Citation

Nielsen, Joyce J. 1-2-3 Release 2.4 Quick Reference. Que Corp., 1992.