Gaya APA
Sarwani,Jhonathan, .
(2007).
Analisa Data Penelitian SPSS13
.
Yogyakarta:
Andi.
Gaya MLA
Sarwani,Jhonathan, .
"Analisa Data Penelitian SPSS13".
Yogyakarta:
Andi,
2007.
Text.