Citazione Stile APA (7a Edizione)
Lewis, M. (2017). <The> Undoing Project: <A> Friendship that Changed the World. Penguin Books.
Citazione stile Chigago Style (17a edizione)
Lewis, Michael. <The> Undoing Project: <A> Friendship That Changed the World. London: Penguin Books, 2017.
Citatione MLA (9a ed.)
Lewis, Michael. <The> Undoing Project: <A> Friendship That Changed the World. Penguin Books, 2017.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.