Johar, R. S., & Khanna, J. S. (1983). Studies in Punjab economy. Punjab School of Economics, Guru Nanak Dev University.
Lua i Stíl Chicago (17ú heag.)Johar, R. S., agus J. S. Khanna. Studies in Punjab Economy. Amritsar: Punjab School of Economics, Guru Nanak Dev University, 1983.
Lua MLA (8ú heag.)Johar, R. S., agus J. S. Khanna. Studies in Punjab Economy. Punjab School of Economics, Guru Nanak Dev University, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.