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Dyfyniad Arddull ChicagoFord Foundation. The Finances of the Performing Arts. New York: Ford Foundation, 1974.
Dyfyniad MLAFord Foundation. The Finances of the Performing Arts. Ford Foundation, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.