Gaya APA
Nawawi, H., Martini, M.
(1994).
Penelitian Terapan
.
Yogyakarta:
Gadjah Mada Univerity Press.
Gaya MLA
Nawawi, Hadari., Martini, Mimi.
"Penelitian Terapan".
Yogyakarta:
Gadjah Mada Univerity Press,
1994.
Umum.