Douglas Adams(1)
J. Bakker(1)
Albert K. Boekhorst(1)
Jan Bommerez(1)
Edward de Bono(1)
Anke Brouwers(1)
Y. Buchel(1)
Tara Calishain(1)
Douglas Coupland(1)
Stephen R. Covey(2)
Arjan Dasselaar(1)
Anneke Dekkers(1)
Richard Engelfriet(2)
Karin de Galan(2)
Malcolm Gladwell(1)
Thomas Gordon(1)
Berthold Gunster(1)
Brooks Jackson(1)
Marcel Karreman(1)
Art Kleiner(1)
Rita Kohnstamm(1)
Marjo Korrel(1)
John P. Kotter(1)
Ton Langelaan(1)
Marijke Lingsma(2)
Cor Molenaar(1)
Justine Mol(2)
Peter Morville(1)
Hanna Nathans(1)
Daniel Ofman(1)
Jan Remmerswaal(1)
S. Robbins(1)
Marshall B. Rosenberg(1)
Biz Stone(1)
Erwin Tielemans(1)
Hans Verhage(1)
Bill Watterson(2)
Ian H. Witten(1)