Gaya APA
HELIANTHUSONFRI, J.
(2019).
BELAJAR SOCIAL MEDIA MARKETING
.
Jakarta:
PT Alex Media Komputindon.
Gaya MLA
HELIANTHUSONFRI, JEFFERLY.
"BELAJAR SOCIAL MEDIA MARKETING".
Jakarta:
PT Alex Media Komputindon,
2019.
Text.