https://openlibrary.org/books/OL7581367M.opdsProcess Improvement Essentials CMMI, Six Sigma, and ISO 90012010-08-06T02:25:57ZJames Perssehttps://openlibrary.org/authors/OL2727062A/James_PersseO'Reilly Media, Inc.September 14, 2006350enghttps://openlibrary.org/books/OL7581367Murn:ISBN:0596102178urn:ISBN:9780596102173