Collier, P. (2006). Is aid oil? An analysis of whether Africa can absorb more aid. Elsevier.
Cita Chicago (17th ed.)Collier, P. Is Aid Oil? An Analysis of Whether Africa Can Absorb More Aid. Elsevier, 2006.
Cita MLA (9th ed.)Collier, P. Is Aid Oil? An Analysis of Whether Africa Can Absorb More Aid. Elsevier, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.