Cita APA (7th ed.)

Harari, Y. N. (2019). 21 lessons for the 21st century. Vintage.

Cita Chicago (17th ed.)

Harari, Yuval N. 21 Lessons for the 21st Century. London: Vintage, 2019.

Cita MLA (9th ed.)

Harari, Yuval N. 21 Lessons for the 21st Century. Vintage, 2019.