na YOGYA-02090000039996 20090227025616.0 ind 979-99176-3-8 010-020900000039996 175 Sir E SIREGAR, Ashadi Etika komunikasi Ashadi Siregar Cet.1 Yogyakarta Pustaka Book Publisher 2006 288 hlm 21 cm Etika komunikasi YOPDYOG(B) 10-11-07 3 07B0031494 07B0031495 07B0031496