Cita APA (7th ed.)

SPENCE RICK. (1989). CLIPPER PROGRAMMING GUIDE. BPB PUBLICATIONS.

Cita Chicago (17th ed.)

SPENCE RICK. CLIPPER PROGRAMMING GUIDE. NEW DELHI: BPB PUBLICATIONS, 1989.

Cita MLA (9th ed.)

SPENCE RICK. CLIPPER PROGRAMMING GUIDE. BPB PUBLICATIONS, 1989.