Yerkes, L. (2003). Beans: Four principles for running a business in good times or bad,A business fable taken from real life. San Francisco: John Wiley & Sons.
Παραπομπή Chicago StyleYerkes, Leslie. Beans: Four Principles for Running a Business in Good Times or Bad,A Business Fable Taken From Real Life. San Francisco: John Wiley & Sons, 2003.
Παραπομπή MLAYerkes, Leslie. Beans: Four Principles for Running a Business in Good Times or Bad,A Business Fable Taken From Real Life. San Francisco: John Wiley & Sons, 2003.
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