Dyer, F. C., & Dyer, J. M. (1971). The enjoyment of management. Dow Jones-Irwin.
Lua i Stíl Chicago (17ú heag.)Dyer, Frederick C., agus John M. Dyer. The Enjoyment of Management. Homewood, Ill: Dow Jones-Irwin, 1971.
Lua MLA (9ú heag.)Dyer, Frederick C., agus John M. Dyer. The Enjoyment of Management. Dow Jones-Irwin, 1971.
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