Indonesia. Syiah Kuala University. (1972). Economic contour study of Sumatra (Aceh and North Sumatera). Economic and Social Research Institute, Syiah Kuala University.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रIndonesia. Syiah Kuala University. Economic Contour Study of Sumatra (Aceh and North Sumatera). Darussalan, Aceh: Economic and Social Research Institute, Syiah Kuala University, 1972.
एमएलए (9वां संस्करण) प्रशस्ति पत्रIndonesia. Syiah Kuala University. Economic Contour Study of Sumatra (Aceh and North Sumatera). Economic and Social Research Institute, Syiah Kuala University, 1972.
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