Cita APA (7a ed.)

(1987). SPSS Data Entry II for the IBM PC/XT/AT. SPSS.

Cita Chicago Style (17a ed.)

SPSS Data Entry II for the IBM PC/XT/AT. Chicago: SPSS, 1987.

Cita MLA (8a ed.)

SPSS Data Entry II for the IBM PC/XT/AT. SPSS, 1987.