Gaya APA

HARARI,YUVAL NOAH. (2018). 21 LESSON FOR THE 21ST CENTURY (PERTAMA). NY: Penguin Random House.

Gaya Chicago

HARARI,YUVAL NOAH. 21 LESSON FOR THE 21ST CENTURY. PERTAMA NY: Penguin Random House, 2018. Text.

Gaya MLA

HARARI,YUVAL NOAH. 21 LESSON FOR THE 21ST CENTURY. PERTAMA NY: Penguin Random House, 2018. Text.

Gaya Turabian

HARARI,YUVAL NOAH. 21 LESSON FOR THE 21ST CENTURY. PERTAMA NY: Penguin Random House, 2018. Print.