Sonnenfeld, J. A. (1984). Managing Carear Systems Channeling The Flow Of Executive Carear Jeffrey A. Sonnenfeld. Richard D. Irwin.
Lua i Stíl Chicago (17ú heag.)Sonnenfeld, Jeffrey A. Managing Carear Systems Channeling The Flow Of Executive Carear Jeffrey A. Sonnenfeld. Richard D. Irwin, 1984.
Lua MLA (8ú heag.)Sonnenfeld, Jeffrey A. Managing Carear Systems Channeling The Flow Of Executive Carear Jeffrey A. Sonnenfeld. Richard D. Irwin, 1984.
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