na INLIS000000000001595 20170712110540 0010-0717000172 Etika Komunikasi / Ashadi Siregar Siregar, Ashadi Cet. 2 288 hlm ; 21 cm Yogyakarta : Pustaka Book publisher, 2008 175 175 SIR e 979-99176-3-8 Etika Komunikasi 0419/PERPUSHST/2011 0676/PERPUSHST/2011