APA (7th ed.) Zitazioa

Harari, Y. N. (2018). 21 lessons for the 21st century (First edition.). Spiegel & Grau.

Chicago Style (17th ed.) Zitazioa

Harari, Yuval N. 21 Lessons for the 21st Century. First edition. New York: Spiegel & Grau, 2018.

MLA (9th ed.) Zitazioa

Harari, Yuval N. 21 Lessons for the 21st Century. First edition. Spiegel & Grau, 2018.