Co-Authors Acai Sudirman Anggiat Sinurat Anggiat Sinurat Arnold Sultantio Hutabarat Bagudek Tumanggor Bagudek Tumanggor Bagudek Tumanggor Dace Purba Dace Purba Damanik, Darwin Damanik, Parlin Damanik, Tommi Damanik, Widya Darwin Darwin Darwin Darwin Desman Gulo Desman Gulo Desman Gulo DIAN G PURBA Dian G Purba Dina Revani Saragih Djuli Sjafei Purba Dwi Maria Hasibuan Ekayanty Manurung Ester Adelyn Exaramayana Hp Malau Exaramayana Hp Malau Fariaman Purba Fariaman Purba Fariaman Purba Febiola, Anisa Nur Fitri Sitinjak Handika Y Sembiring Hasibuan, Dwi Maria Jefri Alfin Sinaga Jefri Alfin Sinaga Jefri Alfin Sinaga Johanes W P Purba Johanes WP Purba Johanes WP Purba M Sitanggang, Ramles Marlina Sijabat Marlina Sijabat Murniati Tobing Murniati Tobing Naibaho, Robby Pandapotan Damanik Pandapotan Damanik Pandapotan Simatupang Panjaitan, Pawe Pawer Darasa Panjaitan Pinondang Nainggolan Purba, Demak Purba, Maisyaroh Purba, Romario Ramles M Sitanggang Rikawati Romasi Butar – Butar Sanniana Sidabutar Sanniana Sidabutar Saragih, Dina Saragih, Liharman Shinta Eklesia Sitorus Shinta Eklesia Sitorus Siadari, Faisal Siahaan, Rospita C Y Siallagan, Monica Sijabat, Marlina Simarmata, Albenopri Simbolon, Jelita Tambak, Dian G Purba Tasya Tan Tatang Syahban Adi Syahputra Tatang Syahban Adi Syahputra Taufik Parinduri Taufik Parinduri Taufik Parinduri Taufik Parinduri Tumanggor, Bagudek Vitryani Tarigan Wani, Agustama Wico Jontarudi Tarigan Yeni Ariesa Yosi Irawelda Saragih Zulkarnain, Dedek