Gaya APA
Vass, P, H, I, M, &, A.
(2004).
Keterampilan Statistika
.
Bandung:
Pakar Raya.
Gaya MLA
Vass, Peter, Hook,, Ian, McPhail, &, Andy.
"Keterampilan Statistika".
Bandung:
Pakar Raya,
2004.
.