Gaya APA

INC., D, C, &, A. (2018). How To Win Friends & Influence People in The Digital Age . Jakarta: PT. Gramedia Pustaka Utama.

Gaya MLA

INC., Dale, Carnegie, &, Associates,. "How To Win Friends & Influence People in The Digital Age". Jakarta: PT. Gramedia Pustaka Utama, 2018. Text.