Kets de Vries, M. F. R., & Florent-Treacy, E. (1999). The new global leaders: Richard Branson, Percy Barnevik, and David Simon. Jossey-Bass.
Lua i Stíl Chicago (17ú heag.)Kets de Vries, Manfred F. R., agus Elizabeth Florent-Treacy. The New Global Leaders: Richard Branson, Percy Barnevik, and David Simon. San Francisco, Calif: Jossey-Bass, 1999.
Lua MLA (9ú heag.)Kets de Vries, Manfred F. R., agus Elizabeth Florent-Treacy. The New Global Leaders: Richard Branson, Percy Barnevik, and David Simon. Jossey-Bass, 1999.
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