Kotter, J. P. (1999). John P. Kotter On What Leaders Really Do. Harvard Business Review Press.
Lua i Stíl Chicago (17ú heag.)Kotter, John P. John P. Kotter On What Leaders Really Do. Boston, Massachesutts: Harvard Business Review Press, 1999.
Lua MLA (9ú heag.)Kotter, John P. John P. Kotter On What Leaders Really Do. Harvard Business Review Press, 1999.
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