Gaya APA
Savitri, A.
(2018).
50 Cara Kaya Ala Richard Branson
.
Yogyakarta:
Ganesis Learning.
Gaya MLA
Savitri, Astrid.
"50 Cara Kaya Ala Richard Branson".
Yogyakarta:
Ganesis Learning,
2018.
Text.