Gaya APA
Putra, I, M.
(2019).
Business Model and Business Plan di Era 4.0
(
1)
.
YOGYAKARTA:
Quadrant.
Gaya MLA
Putra, Indra, Mahardika.
"Business Model and Business Plan di Era 4.0".
1
YOGYAKARTA:
Quadrant,
2019.
Text.