Gaya APA
Trihendradi, C.
(2005).
Step by Step SPSS 13 Analisa Data Statistik
.
Yogyakarta:
Andi Offset.
Gaya MLA
Trihendradi, Cornelius.
"Step by Step SPSS 13 Analisa Data Statistik".
Yogyakarta:
Andi Offset,
2005.
PRINTED BOOK.