na INLIS000000000066791 20211206020644 0010-1221000052 ta 211206 g 0 ind 978-623-00-0427-8 006.754 006.754 JEF b Jefferly Helianthusonfri Belajar Social Media Marketing / Jefferly Helianthusonfri Cet. 1 Jakarta : PT. Elex Media Komputindo, 2019 178 hlm. : ilus. ; 21 cm. SOSIAL MEDIA