Gaya APA
Kotler, P.
(2019).
Marketing 4.0 Moving From Tradisional to Digital
(
Cet.2 )
.
Jakarta:
Gramedia Pustaka Utama.
Gaya MLA
Kotler, Philip.
"Marketing 4.0 Moving From Tradisional to Digital".
Cet.2
Jakarta:
Gramedia Pustaka Utama,
2019.
Text.