Gaya APA
Nawawi, H, H.
(2006).
Instrumen penelitian bidang sosial
.
Yogyakarta:
Gadjah Mada University Press.
Gaya MLA
Nawawi, H., Hadari.
"Instrumen penelitian bidang sosial".
Yogyakarta:
Gadjah Mada University Press,
2006.
Text.