Παραπομπή APA

Gurdon, C. (1986). Sudan in transition: A political risk analysis. London: The Economist Intelligence Unit.

Παραπομπή Chicago Style

Gurdon, Charles. Sudan in Transition: A Political Risk Analysis. London: The Economist Intelligence Unit, 1986.

Παραπομπή MLA

Gurdon, Charles. Sudan in Transition: A Political Risk Analysis. London: The Economist Intelligence Unit, 1986.

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