APA (7 वां संस्करण) प्रशस्ति पत्र

Sadhukhan, S. K. (1994). Economic geography: An appraisal of resources (Fourth edition.). S. Chand & Co.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Sadhukhan, S K. Economic Geography: An Appraisal of Resources. Fourth edition. New Delhi: S. Chand & Co, 1994.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Sadhukhan, S K. Economic Geography: An Appraisal of Resources. Fourth edition. S. Chand & Co, 1994.