Suryadi, Oppie, & Shulhuly Ashfahani. " Peranan Internal Public Relations PT Prasadha Pamunah Limbah Industri Dalam Mensosialisasikan Brand PPLI." Jurnal Ilmiah Komunikasi (JIKOM) STIKOM IMA [Online], 12.02 (2020): 71-79. Web. 21 Dec. 2024