Gaya APA

-charvet, A, N, B, B. (2018). Makin sedikit makin bahagia . Jakarta: PT Gramedia Pustaka Utama.

Gaya MLA

-charvet, Amy, Nemark,, Brooke, Burke. "Makin sedikit makin bahagia". Jakarta: PT Gramedia Pustaka Utama, 2018. Text.