APA (7th ed.) Citation

Davis, W. S., & Schreiner, P. (1990). Computing fundamentals: DBASE IV. Addison-Wesley.

Chicago Style (17th ed.) Citation

Davis, William S., and Paul Schreiner. Computing Fundamentals: DBASE IV. Reading, Mass: Addison-Wesley, 1990.

MLA (9th ed.) Citation

Davis, William S., and Paul Schreiner. Computing Fundamentals: DBASE IV. Addison-Wesley, 1990.