Krames, J. (2005). Jack Welch and the 4 E`s of leadership: How to put GE`s leadership formula work in your organization. Tata McGraw Hill.
Lua i Stíl Chicago (17ú heag.)Krames, Jeggrey. Jack Welch and the 4 E`s of Leadership: How to Put GE`s Leadership Formula Work in Your Organization. New Delhi: Tata McGraw Hill, 2005.
Lua MLA (9ú heag.)Krames, Jeggrey. Jack Welch and the 4 E`s of Leadership: How to Put GE`s Leadership Formula Work in Your Organization. Tata McGraw Hill, 2005.
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