na INLIS000000000065931 20211019024307 0010-1021000271 a ||| | 211019 g 0 ind 978-602-04-7949-1 006.754 005 YUN s Jefferly Helianthusonfri Tools for Social Media Marketing / Jefferly Helianthusonfri C.3 Jakarta : PT. Elex Media Komputindo, 2019 viii, 206 hlm, : ilus. ; 21 cm. SOSIAL MEDIA 006.754 JEF t 00000319576 00000319576