Gaya APA
Trihendradi, C. et al (2013).
Step By Step : IBM SPSS 21 Analisis Data Statistik CD-ROM (Ed.I).
Yogyakarta:
CV Andi Offset.
Gaya MLA
Trihendradi, Cornelius. et al.
"Step By Step : IBM SPSS 21 Analisis Data Statistik CD-ROM".
Ed.I
Yogyakarta:
CV Andi Offset,
2013.
Text.