Cita APA (7th ed.)
Duckworth, A. (2016). Grit: The Power of Passion and Perseverance. Scribner.
Cita Chicago (17th ed.)
Duckworth, Angela. Grit: The Power of Passion and Perseverance. New York: Scribner, 2016.
Cita MLA (9th ed.)
Duckworth, Angela. Grit: The Power of Passion and Perseverance. Scribner, 2016.
Atenció: Aquestes cites poden no estar 100% correctes.