Gaya APA

Singgih, Y., Andika, R, Y. (2017). Never Too Young To Become a Billionaire . Jakarta: ELex Media Komputindo.

Gaya MLA

Singgih, Yasa., Andika, Roby, Yonki. "Never Too Young To Become a Billionaire". Jakarta: ELex Media Komputindo, 2017. Book.