NAWAWI, H., & HADARI, M. M. (1992). Instrumen penelitian bidang sosial. Gadjah Mada University.
Dyfyniad Arddull ChicagoNAWAWI, Hadari, and M. Martini HADARI. Instrumen Penelitian Bidang Sosial. Yogyakarta: Gadjah Mada University, 1992.
Dyfyniad MLANAWAWI, Hadari, and M. Martini HADARI. Instrumen Penelitian Bidang Sosial. Gadjah Mada University, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.