Gaya APA
PUTRA, I, M.
(2021).
Business Model and Business Plan di Era 4.0
(
cet. 2)
.
Yogyakarta:
Quadrantt.
Gaya MLA
PUTRA, Indra, Mahardika.
"Business Model and Business Plan di Era 4.0".
cet. 2
Yogyakarta:
Quadrantt,
2021.
BUKU.