John Kotter/ Holger Rathgeber
(3)
Jerome Martin, Lan Cook, Alice James, Alex Frith, Minna Lacey
(1)
John Kotter and Holger Rathberger
(1)
John Kotter,Holger Rathgeber
(1)
John Kotter/ Holger Rathgeber/ Peter Mueller (ILT)
(1)
John Kotter/ Oliver Wyman (NRT)
(1)
John Kotter; Holger Rathgeber
(1)