Gaya APA
Trihendradi, C.
(2005).
Step by Step SPSS 13 Analisis Data Statistik
(
1st Ed.)
.
Yogyakarta:
Andi.
Gaya MLA
Trihendradi, Cornelius.
"Step by Step SPSS 13 Analisis Data Statistik".
1st Ed.
Yogyakarta:
Andi,
2005.
Text.