Grewal, S. S., & Sidhu, D. S. (1980). Prosperity of Punjab farmer: Reality or myth? Dept. of Economics & Sociology, Punjab Agricultural University.
Lua i Stíl Chicago (17ú heag.)Grewal, S. S., agus Dalip Singh Sidhu. Prosperity of Punjab Farmer: Reality or Myth? Ludhiana: Dept. of Economics & Sociology, Punjab Agricultural University, 1980.
Lua MLA (8ú heag.)Grewal, S. S., agus Dalip Singh Sidhu. Prosperity of Punjab Farmer: Reality or Myth? Dept. of Economics & Sociology, Punjab Agricultural University, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.