Cita APA (7th ed.)

Andersen, D., & Weil, B. (1989). 1-2-3 database techniques. Que Corporation.

Cita Chicago (17th ed.)

Andersen, Dick, i Bill Weil. 1-2-3 Database Techniques. Carmel, Indiana: Que Corporation, 1989.

Cita MLA (9th ed.)

Andersen, Dick, i Bill Weil. 1-2-3 Database Techniques. Que Corporation, 1989.