De Vries, M. K. (2011). Reflections on groups and organizations. Jossey-Bass.
Dyfyniad Arddull ChicagoDe Vries, Manfred Kets. Reflections on Groups and Organizations. Chichester, West Sussex: Jossey-Bass, 2011.
Dyfyniad MLADe Vries, Manfred Kets. Reflections on Groups and Organizations. Jossey-Bass, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.