Arcidiacono, Gabriele
Leading processes to lead companies: lean six sigma: Kaizen leader & Green Belt handbook
Springer-Verlag, 2012
 eBooks
El-Haik, Basem
Simulation-based lean six-sigma and design for sis-sigma
John Wiley & Sons, 2006
 Buku Teks SO
Schonberger, Richard John
Best practices in lean six sigma process improvement: a deeper look
John Wiley & Sons, 2008
 Buku Teks
Strategi bisnis six sigma
Manajemen Usahawan Indonesia, XXXII (01) Januari 2003: 47-49, 2003
 Artikel Jurnal
George, Michael L.
Lean six sigma for service : how to use lean speed and six sigma quality to improve services and transactions
McGraw-Hill, 2003
 Buku Teks