Author(s) : Murhadi, Werner R - Fakultas Ekonomi, Program Studi Manajemen, Universitas Kristen Petra - Suharti, Lieli - Chang, Desmond - Soetanto, Tessa Vanina - Ricky, Ricky - Sirine, Hani - Chandra, Herry Pintardi - Indarto, Indarto - Wiguna, I Putu Artama - Kaming, Peter - Sawitri, Peni - Semuel, Hatane - Zulkarnain, Joni - Tarigan, Josua -