Cita APA (7a ed.)

(1999). SPSS BASE 9.0: Applications guide (1a. ed.). SPSS.

Cita Chicago Style (17a ed.)

SPSS BASE 9.0: Applications Guide. 1a. ed. EEUU: SPSS, 1999.

Cita MLA (8a ed.)

SPSS BASE 9.0: Applications Guide. 1a. ed. SPSS, 1999.