Gaya APA
Digital Marketing Concept. (2018).
Jakarta:
PT Gramedia Pustaka Utama.
Gaya Chicago
Digital Marketing Concept.
.
Jakarta:
PT Gramedia Pustaka Utama,
2018.
Buku.
Gaya MLA
Digital Marketing Concept.
.
Jakarta:
PT Gramedia Pustaka Utama,
2018.
Buku.
Gaya Turabian
Digital Marketing Concept.
Jakarta:
PT Gramedia Pustaka Utama,
2018.
Buku.