APA (7th ed.) Citation

Fox, M. B., & Metzelaar, L. C. (1990). 1-2-3 Release 2.2 workbook and disk. Que Corporation.

Chicago Style (17th ed.) Citation

Fox, Marianne B., and Lawrence C. Metzelaar. 1-2-3 Release 2.2 Workbook and Disk. Carmel,Indiana: Que Corporation, 1990.

MLA (9th ed.) Citation

Fox, Marianne B., and Lawrence C. Metzelaar. 1-2-3 Release 2.2 Workbook and Disk. Que Corporation, 1990.