1. Oakland, J.: Leadership and policy deployment: the backbone of TQM. Total Qual. Manag. Bus. Excell. 22(5), 517–534 (2011)
2. Hamrol, A.: Quality Management and Engineering. With a Look into Reality 4.0 (in Polish), PWN, Warszawa (2023)
3. ISO 9001:2015 — Quality management systems — Requirements
4. ISO 13485:2016 — Medical devices — Quality management systems — Requirements for regulatory purposes
5. ISO 13053–2:2011 — Quantitative methods in process improvement — Six Sigma — Part 2: Tools and techniques