APA (7e ed.) Bronvermelding
Duckworth, A. (2016). Grit: The Power of Passion and Perseverance. Scribner.
Chicago (17e ed.) Bronvermelding
Duckworth, Angela. Grit: The Power of Passion and Perseverance. New York: Scribner, 2016.
MLA (9e ed.) Bronvermelding
Duckworth, Angela. Grit: The Power of Passion and Perseverance. Scribner, 2016.
Let op: Deze citaties zijn niet altijd 100% accuraat.