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Dyfyniad Arddull ChicagoVijverberg, Wim P.M. Profits from Self-employment: A Case Study of Cote D'Ivoire. Washington: World Bank, 1988.
Dyfyniad MLAVijverberg, Wim P.M. Profits from Self-employment: A Case Study of Cote D'Ivoire. World Bank, 1988.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.