APA Style
Trihendradi, C.
(2013).
Step By Step IBM SPSS 21: Analisis Data Statistik
.
Yogyakarta:
Andi Offset.
MLA Style
Trihendradi, Cornelius.
"Step By Step IBM SPSS 21: Analisis Data Statistik".
Yogyakarta:
Andi Offset,
2013.
Informatika.