India Ministry of Shipping & Transport Directorate of Transport Research. (1973). Port transport statistics: 1972-73. Directorate of Transport Research.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रIndia Ministry of Shipping & Transport Directorate of Transport Research. Port Transport Statistics: 1972-73. Directorate of Transport Research, 1973.
एमएलए (9वां संस्करण) प्रशस्ति पत्रIndia Ministry of Shipping & Transport Directorate of Transport Research. Port Transport Statistics: 1972-73. Directorate of Transport Research, 1973.
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