APA Style
NAWAWI, H., HADARI, M. (1992).
Instrumen Penelitian Bidang Sosial .
Yogyakarta:
Gadjah Mada University Press.
MLA Style
NAWAWI, HADARI., HADARI, MARTINI.
"Instrumen Penelitian Bidang Sosial".
Yogyakarta:
Gadjah Mada University Press,
1992.
Text.