na INLIS000000000001661 20190821033055 0010-0819000117 ta 190821 g 1 ind 9786020433639 741.5 S 741.5 YOU w Youngseon Jo Why? : SNS = Social Network Service Cet. 1 Jakarta : Elex Media Komputindo, 2017 184 hlm : ill, ind, bibl ; 24 cm. Komik Pendidikan S/02010/1/02010 S/02010/1/02010 S/02123/1/02123