Harris, Tom; Simón, Yara (2023-07-18). "How Sewing Machines Work". HowStuffWorks (published 2002-01-17). Archived from the original on 2025-07-10. Retrieved 2025-09-24.
Harris, Tom; Simón, Yara (2023-07-18). "How Sewing Machines Work". HowStuffWorks (published 2002-01-17). Archived from the original on 2025-07-10. Retrieved 2025-09-24.
Blodget, Clifford (2013). The sewing machine master guide: from basic to expert. Missouri City, TX: Blodget Publishing. pp. 14–15. ISBN978-0-9900227-2-5. OCLC882118537.
Rathinamoorthy, R. (2015). Apparel machinery and equipments. R. Surjit. Boca Raton: Woodhead Publishing. p. 79. ISBN978-93-80308-15-9. OCLC927290694.