एपीए उद्धरण

Harari, Y. N. (2018). Twentyone lessons for the twentyfirst century. Jonathan Cape.

शिकागो स्टाइल उद्धरण

Harari, Yuval N. Twentyone Lessons for the Twentyfirst Century. London: Jonathan Cape, 2018.

एमएलए उद्धरण

Harari, Yuval N. Twentyone Lessons for the Twentyfirst Century. Jonathan Cape, 2018.