1. Effect of Lean Six Sigma on quality performance in Malaysian hospitals
2. Brazil. Ministry of Health. (2010). National Humanization Policy: Textbooks. Basic document for SUS managers and workers. Series B. Basic Health Texts (4th ed.). Retrieved from: http://bibliotecadigital.puc-campinas.edu.br/services/e-books/humanizasus_documento_gestores_trabalhadores_sus.pdf
3. Coriat, B. (1994). Thinking Inside Out: The Japanese Model of Work and Organization [Pensar pelo Avesso: o modelo japonês de trabalho e organização]. UFRJ Editora.
4. CraneJ.NoonC. E. (2011). The Definitive Guide to Emergency Department Operational Improvement - Employing Lean Principles with Current ED Best Practices to Create the “No Wait” Department. CRC Press.
5. Di Marzo, R. (2017) The kaizen methodology: Applications and Implementation of the Japanese Model in the West: Lantech Case [La metodologia kaizen: Applicazioni e Implementazione del Modello Giapponese in Occidente: Caso Lantech]. Division of Scienze Economiche and Aziendali “Marco Fanno”, Università Degli Studi di Padova. Retrieved from: http://tesi.cab.unipd.it/61701/