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Gà Delaware Gà Derbyshire Gà Dekalb Gà Serama Gà Leghorn Go Deep Gà Dominant Gấu đen Bắc Mỹ Gà Bekisar Gà BETài liệu tham khảo
WikiPedia: Gà_Delaware http://www.mypetchicken.com/Delaware-B43.aspx http://www.sagehenfarmlodi.com/chooks/chooks.html http://www.albc-usa.org/cpl/delaware.html http://www.delawareclub.org http://www.delawarepoultryclub.org https://archive.org/details/howtoraisechicke00hein https://archive.org/details/storeysillustrat0000ek... https://web.archive.org/web/20161110141342/http://...