Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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