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Dyfyniad Arddull ChicagoTruxal, John G. Feedback-Automation. Stony Brook: Research foundation of State University of New York, 1989.
Dyfyniad MLATruxal, John G. Feedback-Automation. Research foundation of State University of New York, 1989.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.