Gaya APA
Savitri, A., Kamalia, N, Z. (2018).
50 Cara Kaya Ala Richard Branson (Cet. I, 2018).
Yogyakarta:
Genesis Learning.
Gaya MLA
Savitri, Astrid., Kamalia, Nisa, Zaki.
"50 Cara Kaya Ala Richard Branson".
Cet. I, 2018
Yogyakarta:
Genesis Learning,
2018.
Book.