Sadhukhan, S. K. (1994). Economic geography: An appraisal of resources (Fourth edition.). S. Chand & Co.
Lua i Stíl Chicago (17ú heag.)Sadhukhan, S K. Economic Geography: An Appraisal of Resources. Fourth edition. New Delhi: S. Chand & Co, 1994.
Lua MLA (8ú heag.)Sadhukhan, S K. Economic Geography: An Appraisal of Resources. Fourth edition. S. Chand & Co, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.