Penulis Ria A. Effendhi Jullie J. Sondakh Novi S. Budiarso DOI: https://doi.org/10.32400/gc.12.2.18502.2017 Abstrak Unduhan PDF (English) Diterbitkan 2017-12-31 Terbitan Vol 12 No 2 (2017) Bagian Articles Lisensi Author keep the copyright of the article published in this journal