Henry Stewart. "The Varieties and Breeds of Sheep". The Domestic Sheep: Its Culture and General Management. American Sheep Breeder Press. مؤرشف من الأصل في 2019-12-18. اطلع عليه بتاريخ 2009-04-03.
Henry Stewart. "The Varieties and Breeds of Sheep". The Domestic Sheep: Its Culture and General Management. American Sheep Breeder Press. مؤرشف من الأصل في 2019-12-18. اطلع عليه بتاريخ 2009-04-03.
worldcat.org
Paterson، Mark (1990). National Merino Review. West Perth, Australia: Farmgate Press. ص. 12–17. ISSN:1033-5811.