Horowitz, B. (2014). Hard things about hard things: Building business when there are no easy answers. Harper Business.
Citace podle Chicago (17th ed.)Horowitz, Ben. Hard Things About Hard Things: Building Business When There Are No Easy Answers. New York: Harper Business, 2014.
Citace podle MLA (9th ed.)Horowitz, Ben. Hard Things About Hard Things: Building Business When There Are No Easy Answers. Harper Business, 2014.
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