Cita APA (7th ed.)

(2016). SPSS for Starters and 2nd Levelers by Ton J. Cleophas, Aeilko H. Zwinderman. [electronic resource].

Cita Chicago (17th ed.)

SPSS for Starters and 2nd Levelers by Ton J. Cleophas, Aeilko H. Zwinderman. [electronic Resource]. 2016.

Cita MLA (9th ed.)

SPSS for Starters and 2nd Levelers by Ton J. Cleophas, Aeilko H. Zwinderman. [electronic Resource]. 2016.