Horowitz, B. (2014). The hard thing about hard things: Building a business when there are no easy answers. New York: HarperCollins Publishers.
Chicago-стиль цитированияHorowitz, Ben. The Hard Thing About Hard Things: Building a Business When There Are No Easy Answers. New York: HarperCollins Publishers, 2014.
MLA-цитированиеHorowitz, Ben. The Hard Thing About Hard Things: Building a Business When There Are No Easy Answers. New York: HarperCollins Publishers, 2014.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.