Thielen, D., & Thielen, S. (1999). The 12 simple secrets of Microsoft management: How to think and act like a Microsoft manager and take your company to the top. New York: McGraw-Hill.

Thielen, David, and Shirley Thielen. The 12 Simple Secrets of Microsoft Management: How to Think and Act Like a Microsoft Manager and Take Your Company to the Top. New York: McGraw-Hill, 1999.

Thielen, David, and Shirley Thielen. The 12 Simple Secrets of Microsoft Management: How to Think and Act Like a Microsoft Manager and Take Your Company to the Top. New York: McGraw-Hill, 1999.