Sternberg, E. (1977). Farmers' decision making and agricultural development in the Krian District, Perak: A study. Jabatan Pertanian Negeri, Perak.
Lua i Stíl Chicago (17ú heag.)Sternberg, Ernest. Farmers' Decision Making and Agricultural Development in the Krian District, Perak: A Study. [Ipoh]: Jabatan Pertanian Negeri, Perak, 1977.
Lua MLA (8ú heag.)Sternberg, Ernest. Farmers' Decision Making and Agricultural Development in the Krian District, Perak: A Study. Jabatan Pertanian Negeri, Perak, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.