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Ekarius, Carol (2007). Storey's Illustrated Guide to Poultry Breeds. 210 MAS MoCA Way, North Adams MA 01247: Storey Publishing. ISBN978-1-58017-667-5.CS1 maint: location (link)
Batty, J (1996 Fifth edition). Understanding Modern Game. Station Yard Elsted Marsh Midhurst West Sussex GU29 OJT: Beech Publishing House. ISBN1857363132. Check date values in: |year= (bantuan)CS1 maint: location (link)
