Cita APA (7th ed.)
Duckworth, A. (2017). Grit: Why Passion and Resilience are the Secrets to Success. Vermilion.
Cita Chicago (17th ed.)
Duckworth, Angela. Grit: Why Passion and Resilience Are the Secrets to Success. London: Vermilion, 2017.
Cita MLA (9th ed.)
Duckworth, Angela. Grit: Why Passion and Resilience Are the Secrets to Success. Vermilion, 2017.
Atenció: Aquestes cites poden no estar 100% correctes.