Horowitz Ben. (2014). The hard thing about hard things: Building a business when there are no easy answers. HarperCollins.
Chicago-čujuhus (17. p.)Horowitz Ben. The Hard Thing About Hard Things: Building a Business When There Are No Easy Answers. New York: HarperCollins, 2014.
MLA-čujuhus (9. p.)Horowitz Ben. The Hard Thing About Hard Things: Building a Business When There Are No Easy Answers. HarperCollins, 2014.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.