APA استشهاد

Harari, Y. N. (2018). 21 lessons for the 21st century. Jonathan Cape.

استشهاد بنمط شيكاغو

Harari, Yuval Noah. 21 Lessons for the 21st Century. London: Jonathan Cape, 2018.

MLA استشهاد

Harari, Yuval Noah. 21 Lessons for the 21st Century. Jonathan Cape, 2018.