Co-Authors Agusti Hartono Agustiningsih, Gloria Al-Fatwa, Anissa Aldrin Winata Alvin Fernando Angel Putri Ari Hadi Prasetyo Billy, Yohanes L. Billy, Yohanes Langgar Carmel Meiden CARMEL MEIDEN Carmel Meiden Che-Ni, Hageem Chika Sri Mulyati Darmawansyah, Iwan Deavvy M.R.Y. Johassan Dergibson Siagian Dyah Nurul Maliki Elis Sondang Dasawaty Elisabeth Vita Mutiarawati Ferdyani, Jovita Firdaus Yuni Dharta Glorya Agustiningsih Sitompul Hardy Sorialam Hendratmoko Mulyani Mulyani Nurlela Nurlela Nurlela Nurlela Nurlela Prasetyo, Hemi Prima Apriwenni Prima Apriwenni Rahmawan, Rizal Rita Eka Setianingsih Rudham, Andi Muhammad Rudhan, Andi Muhammad Sigit Birowo Sismiati Sismiati, Sismiati Suatmi, Bernadetta Dwi Sugi Suhartono Sulaiman, Syarifuddin Sunjaya, Cumonley Tumpal Janj Raja Sitinjak Vita, Elisabeth Winata, Liana Angelina Wiwin Prastio Yanthy Herawaty Purnama Yessy Yuliana Yohanes L. Billy YOHANES LANGGAR BILLY