1- A. Peer Mohamed and Palaniswamy, N. K."Effect of Single Yarn Twist and Ply to Single Yarn Twist". Journal of Applied Polymer Science, 2005, Vol. 98.
2- Gong, R. H. "Specialist yarn and fabric structures Developments and applications". Oxford Cambridge Philadelphia New Delhi : © Woodhead Publishing, 2011. 123.
3- Wang, Xungai. "Fundamentals of Yarn Technology". New England University : WOOL, 2009. 482/582 Wool Processing.
4- Lord, Peter R. "Handbook of yarn production. Cambridge England" , WOODHEAD PUBLISHING LIMITED, 2003. WP1781.
5- Ramesh N, Narkhedkar ."Influence of twist direction on tensile properties of double yarns". Melliand International, 2014, Vol. 20. 5.
6- R, Fangueiro. "Fibrous and composite materials for civil engineering applications". cambridge : Woodhead , 2011. 104.
7- Wright, R H Gong and R M. "Fancy yarns Their manufacture and application". Cambridge England : Woodhead Publishing Ltd, 2002. 1550.
8- Introduction to clothing. studylib. [Online] https://studylib.net/doc/8301954/1.-introduction-to-clothing. [Cited: 3 8, 2021.]
9- PAN, NING and BROOKSTEIN, DAVID . "Physical Properties of Twisted Structures.II. Industrial Yarns, Cords, and Ropes". Journal of Applied Polymer Science, 2002, Vol. 83.
10- Eid, Yaser Mohamed. "Textile filament yarn technology. books world". [Online] https://books-world.net/?p=4323, May 3, 2018. [Cited: Feb 7, 2021.]
11- R, Ayman ELSaid." A comparative study for the properties of shirts fabrics light weight produced from blend boubled yarns". MSC, Faculty of Applied Arts, Helwan University, Egypt,2003.
12- D.Shanmuganandam." Study on Two-For-One Twisting (TFO)". The South India Textile Research Association, Coimbatore - 641 014 : fibre2fashion.com .https://www.fibre2fashion.com/industry-article/1449/study-on-two-for-one-twisting, Jan 2007.
13- Nikolić M, Skenderi Z, Šajn Gorjanc D. "Two-ply Cotton Yarn Production on Ring Spinning Machine and its Quality". Book of Proceedings of the 5th ITC&DC, 2010. 253.
14- Ali, Husain Said." Function achievement in the suit fabric gents and women to utilize of overstocks yarns by using ring twist" . PHD, Faculty of Applied Arts, Helwan University, Egypt,2014.
15- RATTI Luino S.r.l. . RATTI Company. s.l. : info@rattiluino.com - www.rattiluino.com.
16- Al laithy, Amr ."An optimum standard techniques of Two-For-one-Twister m/c for combed cotton yarns". International Design Journal, January 2018, Vol. 8.
17- DirectTwist. http://www.agteks.com/page/comparision/3/directwist. [Online] AG TEKS. [Cited: sept 10, 2020.]
18- O, Ozdemir and S, Sardag." Effect of twisting methods on plied yam properties". Indian journal of fiber and textile Research, sep 2006, Vol. 31.
19- H.M.Behery. "Advances in Yarn Spinning Technology". Woodhead Publishing Series in Textiles, 2010.
20- Elmogahz, Yehia E. Engineering Textiles (Second Edition). s.l. : Science Direct, 2020.
21- BASIT , Abdul and LATIF, Wasif. "The Mechanical and Comfort Properties of Viscose with Cotton and Regenerated Fibers Blended Woven Fabrics". MATERIALS SCIENCE (MEDŽIAGOTYRA), 2018, Vol. 24.