India Directorate Gen. of C. (1981). Monthly statistics of the foreign trade of India. Directoral Gen. of Com. Int. & Stat.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रIndia Directorate Gen. of C. Monthly Statistics of the Foreign Trade of India. Calcutta: Directoral Gen. of Com. Int. & Stat, 1981.
एमएलए (9वां संस्करण) प्रशस्ति पत्रIndia Directorate Gen. of C. Monthly Statistics of the Foreign Trade of India. Directoral Gen. of Com. Int. & Stat, 1981.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.