Citazione Stile APA (7a Edizione)

Horowitz, B. (2014). The hard thing about hard things: Building a business when there are no easy answers (1a. ed.). Harper Collins Publishers.

Citazione stile Chigago Style (17a edizione)

Horowitz, Ben. The Hard Thing About Hard Things: Building a Business When There Are No Easy Answers. 1a. ed. Nueva York: Harper Collins Publishers, 2014.

Citatione MLA (9a ed.)

Horowitz, Ben. The Hard Thing About Hard Things: Building a Business When There Are No Easy Answers. 1a. ed. Harper Collins Publishers, 2014.