Gaya APA
putra, I, M.
(2019).
Business model and business plan di era 4.0
(
Cet. 1)
.
Yogyakarta:
quadrant.
Gaya MLA
putra, Indra, Mahardika.
"Business model and business plan di era 4.0".
Cet. 1
Yogyakarta:
quadrant,
2019.
Text.