na INLIS000000000000876 20260908025208 0010-0926000074 ta 260908 g 0 ind 9786230004278 006.754 006.754 JEF b Jefferly Helianthusonfri Belajar Social Media Marketing / Jefferly Helianthusonfri Jakarta : Elex Media Komputindo, 2019 v + 178 hlm : Ilus ; 20 cm Komunitas Virtual / Media Sosial