Co-Authors Arthur Simanjuntak Barus, Alexander Baxtishodovich, Sobirov Bobur Br Ginting, Setia Arihta Elperida Juniarni Sinurat Eva Ratna Dewi Farida Sagala Ginting, Kristinawati Br Ginting, Mitha Christina Humaida Hanim Judijanto, Loso Julyanthry, Julyanthry Junika Napitupulu Kalit, Desy R S Lili Suryati Maduwu, Fridawati Mamadiyarov, Zokir Manulang, Rasmi Manurung, Basaria Marto Silalahi Maswita Melianna , Saur Melianna, Saur Nababan, Tonggam Sihol Nadapdap, Kristanty M N Sagala, Lamria Sania, Putri Sari Nainggolan, Erni Yuli Sianipar, Angelina Sianipar, Gloria J. Silalahi, Imelda Sarwani Br Simanihuruk, Peran Simanjuntak, Faido M SIMANJUNTAK, GRACESIELA YOSEPHINE Simanjuntak, Vitalia Hanako Murni Simbolon, Marlina Sinaga, Plora Novita Sinurat, Siti Normi Siti Normi, Siti Sitorus, Chanro situmorang, tetti seriati SUNDAY ADE SITORUS T. M. Sirait, Ronnie Theresia, Sisca