Cita APA (7th ed.)
Simpson, A. (1985). Advanced techniques in dBase II. Sybex.
Cita Chicago (17th ed.)
Simpson, Alan. Advanced Techniques in DBase II. Berkeley: Sybex, 1985.
Cita MLA (9th ed.)
Simpson, Alan. Advanced Techniques in DBase II. Sybex, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.