Gaya APA

Harari, Y, N. (2018). 21 Lessons for the 21st Century (Cet. 1). New York: United State of Ameria.

Gaya MLA

Harari, Yuval, Noah. "21 Lessons for the 21st Century". Cet. 1 New York: United State of Ameria, 2018. Text.