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Dyfyniad Arddull ChicagoMartens, Bertin, and Uwe Murrell Mummert. Institutional Economics of Foreign Aid. Cambridge: Cambridge University Press, 2002.
Dyfyniad MLAMartens, Bertin, and Uwe Murrell Mummert. Institutional Economics of Foreign Aid. Cambridge University Press, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.