Kemal, A. R., Burney, N. A., & Hameed, S. (1981). Quota restrictions, tariffs, and the scarcity premium on licences. Pakistan Institute of Development Economics.
Lua i Stíl Chicago (17ú heag.)Kemal, A. R., Nadeem A. Burney, agus Shahid Hameed. Quota Restrictions, Tariffs, and the Scarcity Premium on Licences. Islamabad: Pakistan Institute of Development Economics, 1981.
Lua MLA (8ú heag.)Kemal, A. R., et al. Quota Restrictions, Tariffs, and the Scarcity Premium on Licences. Pakistan Institute of Development Economics, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.