Gaya APA
TRIHENDRADI, C.
(2013).
Step by step IBM SPSS 21:
(
1)
.
Yogyakarta:
Andi Publisher.
Gaya MLA
TRIHENDRADI, C..
"Step by step IBM SPSS 21: ".
1
Yogyakarta:
Andi Publisher,
2013.
Buku.