Lewis Michael. (2017). Undoing Project: Friendship that Changed the World. Penguin Books.
Chicago Style (17. basım) AtıfLewis Michael. Undoing Project: Friendship That Changed the World. Penguin Books, 2017.
MLA (9th ed.) AtıfLewis Michael. Undoing Project: Friendship That Changed the World. Penguin Books, 2017.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..