APA (7th ed.) Citation

Clifford, S. H., Sawyer, S. C., & Coulthard, G. J. (1993). dBASE III plus. Irwin.

Chicago Style (17th ed.) Citation

Clifford, Sarah Hutchinson, Stacey C. Sawyer, and Glen J. Coulthard. DBASE III Plus. Homewood, IL: Irwin, 1993.

MLA (8th ed.) Citation

Clifford, Sarah Hutchinson, et al. DBASE III Plus. Irwin, 1993.