Gaya APA

GREEN, S, B. et al (2012). Using SPSS for Windows and Macintosh : Analyzing and Understanding Data (6). USA: Pearson Education, Inc.

Gaya MLA

GREEN, SAMUEL, B.. et al. "Using SPSS for Windows and Macintosh : Analyzing and Understanding Data". 6 USA: Pearson Education, Inc, 2012. Text.