Gaya APA
Nawawi,Hadari, ., Hadari, M. (1992).
Instrumen penelitian bidang sosial (Cet. 1).
Yogyakarta:
Gadjah Mada University Press.
Gaya MLA
Nawawi,Hadari, ., Hadari, Martini.
"Instrumen penelitian bidang sosial".
Cet. 1
Yogyakarta:
Gadjah Mada University Press,
1992.
Text.