APA

Kinnear P. R., Gray C. D., . (1999). SPSS for windows. : Psychology.

Chicago

Kinnear Paul R, Gray Colin D.Gray, . 1999. SPSS for windows. : Psychology.

Harvard

Kinnear P. R., Gray C. D., . (1999). SPSS for windows. : Psychology.

MLA

Kinnear Paul R, Gray Colin D.Gray, . SPSS for windows. : Psychology. 1999.