Cita APA (7th ed.)

Ackerman, C. (1990). Teach yourself dBase III plus. Osborne McGraw-Hill.

Cita Chicago (17th ed.)

Ackerman, Charles. Teach Yourself DBase III Plus. Berkeley: Osborne McGraw-Hill, 1990.

Cita MLA (9th ed.)

Ackerman, Charles. Teach Yourself DBase III Plus. Osborne McGraw-Hill, 1990.