Hallwood, P., & Sinclair, S. W. (1981). Oil, debt, and development: OPEC in the Third World. Allen & Unwin.
Cita Chicago (17th ed.)Hallwood, Paul, i Stuart W. Sinclair. Oil, Debt, and Development: OPEC in the Third World. London: Allen & Unwin, 1981.
Cita MLA (9th ed.)Hallwood, Paul, i Stuart W. Sinclair. Oil, Debt, and Development: OPEC in the Third World. Allen & Unwin, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.