Gaya APA
Trihendradi, C.
(2012).
Step By Step SPSS 20 Analisis Data Statistik
(
1)
.
Yogyakarta:
Andi Publisher.
Gaya MLA
Trihendradi, C..
"Step By Step SPSS 20 Analisis Data Statistik".
1
Yogyakarta:
Andi Publisher,
2012.
Text.