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3- Sabry Abbas Singer, “The Effect of Mixing and Shearing Pile Threads on Aesthetic Values and Writings in the Design of Suspenders in the Style of Mechanical Carpets in Opposite Shape” Ph.D. Thesis, Faculty of Applied Arts, Helwan University, 2006.
[4] Geoffrey H Crawshaw –Carpet Manufacture- Chaucer Press Limited-2002.
[5] K. K. Goswami-"Advances in carpet manufacture ,Second Edition" Woodhead Publishing Limited, 2018.
[6] Van de Wiele`M."Carpets and Velvet Weaving Machines"-Carpet Jaquard Catalogue`1995