Cita APA (7th ed.)

(1981). Statistical package for the social sciences (SPSS) pocket guide, release 9. McGraw-Hill.

Cita Chicago (17th ed.)

Statistical Package for the Social Sciences (SPSS) Pocket Guide, Release 9. New York: McGraw-Hill, 1981.

Cita MLA (9th ed.)

Statistical Package for the Social Sciences (SPSS) Pocket Guide, Release 9. McGraw-Hill, 1981.