Kotter, J. P. (1996). Leading change. Harvard Business School Press.
Dyfyniad Arddull ChicagoKotter, John P. Leading Change. Boston, Mass.: Harvard Business School Press, 1996.
Dyfyniad MLAKotter, John P. Leading Change. Harvard Business School Press, 1996.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.