Gaya APA
Nawawi, H., Hadari, M, M. (2006).
Instrumen Penelitian Bidang Sosial .
Yogyakarta:
Gadjah Mada University Press.
Gaya MLA
Nawawi, Hadari., Hadari, M., Martini.
"Instrumen Penelitian Bidang Sosial".
Yogyakarta:
Gadjah Mada University Press,
2006.
Text.