Penulis Gabriella Tiffany Theya DOI: https://doi.org/10.32400/gc.9.4.6367.2014 Kata Kunci: Abstrak Unduhan PDF (English) Diterbitkan 2014-12-31 Terbitan Vol 9 No 4 (2014) Bagian Articles Lisensi Author keep the copyright of the article published in this journal