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Dyfyniad Arddull Chicago.Collen, Morris F. Hospital Computer Systems. New York: John Wiley & Sons, 1974.
Dyfyniad MLA.Collen, Morris F. Hospital Computer Systems. John Wiley & Sons, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.