Lua APA (7ú heag.)
Kets de Vries, M. F. R. (2011). The hedgehog effect: Executive coaching and the secrets of building high performance teams. Jossey-Bass.
Lua i Stíl Chicago (17ú heag.)
Kets de Vries, Manfred F. R. The Hedgehog Effect: Executive Coaching and the Secrets of Building High Performance Teams. San Francisco, Calif.: Jossey-Bass, 2011.
Lua MLA (9ú heag.)
Kets de Vries, Manfred F. R. The Hedgehog Effect: Executive Coaching and the Secrets of Building High Performance Teams. Jossey-Bass, 2011.
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