Six sigma for sustainability : how organizations design and deploy winning environmental programs

Strategi bisnis six sigma

The green management revolution : lessons in environmental excellence

Lean six sigma for service : how to use lean speed and six sigma quality to improve services and transactions/Michael L. George

Analisis penerapan lean six sigma dan critical success factor untuk proses perbaikan kualitas layanan jaringan seluler studi kasus: PT Indosat, Tbk = Analysis of the application of lean six sigma and critical success factor for mobile service quality improvement process case study: PT Indosat, Tbk