Gaya APA
Putra, I, M.
(2021).
Business model and business plan di era 4.0
(
Cet. 2)
.
Yogyakarta:
Quadrant.
Gaya MLA
Putra, Indra, Mahardika.
"Business model and business plan di era 4.0".
Cet. 2
Yogyakarta:
Quadrant,
2021.
Book.