Gaya APA
Nawawi, H.
(1994).
Penelitian Terapan
(
Cet. I)
.
Yogyakarta:
Gadjah Mada University Press.
Gaya MLA
Nawawi, Hadari.
"Penelitian Terapan".
Cet. I
Yogyakarta:
Gadjah Mada University Press,
1994.
Text.