Παραπομπή APA

PSI Data Systems. (1985). Macro Reference Manual. PSI Data Systems PVT. LTD.

Παραπομπή Chicago Style

PSI Data Systems. Macro Reference Manual. Bangalore: PSI Data Systems PVT. LTD, 1985.

Παραπομπή MLA

PSI Data Systems. Macro Reference Manual. PSI Data Systems PVT. LTD, 1985.