Gaya APA
Putra, I, M.
(2021).
Business Model And Business Di Era 4.0
.
Yogyakarta:
Penerbit Quadrant.
Gaya MLA
Putra, Indra, Mahardika.
"Business Model And Business Di Era 4.0".
Yogyakarta:
Penerbit Quadrant,
2021.
Text.