Trích dẫn APA

Horowitz, B. (2014). The hard thing about hard things: Building a business when there are no easy answers. New York: HarperCollins Publishers.

Trích dẫn kiểu Chicago

Horowitz, Ben. The Hard Thing About Hard Things: Building a Business When There Are No Easy Answers. New York: HarperCollins Publishers, 2014.

Trích dẫn MLA

Horowitz, Ben. The Hard Thing About Hard Things: Building a Business When There Are No Easy Answers. New York: HarperCollins Publishers, 2014.

Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.