Gaya APA
PUTRA, I, M.
(2021).
Business Model and Business Plan Di era 4,0
(
2)
.
Jakarta:
Quadrant.
Gaya MLA
PUTRA, Indra, Mahardika.
"Business Model and Business Plan Di era 4,0".
2
Jakarta:
Quadrant,
2021.
Teks.