Gaya APA
Nawawi, H., Hadari, M. (1992).
Instrumen Penelitian Bidang Sosial .
Yogyakarta:
Gadjah Mada University Press.
Gaya MLA
Nawawi, Hadari., Hadari, Martini.
"Instrumen Penelitian Bidang Sosial".
Yogyakarta:
Gadjah Mada University Press,
1992.
Text.