Citace podle APA

Horowitz, B. (2011). The hard thing about hard things: Building a business when there are no easy answers. New York: Crown Business.

Styl Chicago

Horowitz, Ben. The Hard Thing About Hard Things: Building a Business When There Are No Easy Answers. New York: Crown Business, 2011.

Citace podle MLA

Horowitz, Ben. The Hard Thing About Hard Things: Building a Business When There Are No Easy Answers. New York: Crown Business, 2011.

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