Gaya APA
Nawawi, H., Hadari, M, M. (1992).
Instrumen penelitian bidang sosial .
Yogyakarta:
Gajah Mada University press.
Gaya MLA
Nawawi, Hadari., Hadari, M, Martini.
"Instrumen penelitian bidang sosial".
Yogyakarta:
Gajah Mada University press,
1992.
Text.