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Co-authors
- Selviana NapitupuluUniversitas HKBP Nommensen PematangsiantarVerified email at uhkbpnp.ac.id
- Victor Marudut Mulia SiregarPoliteknik Bisnis IndonesiaVerified email at murnisadar.ac.id
- SherlySekolah Tinggi Ilmu Ekonomi Sultan AgungVerified email at stiesultanagung.ac.id
- Edy DharmaSekolah Tinggi Ilmu Ekonomi Sultan AgungVerified email at stiesultanagung.ac.id
- Afifa May Shara, S.PdUniversitas HKBP Nommensen MedanVerified email at student.uhn.ac.id
- Dinda AndrianiUniversitas HKBP Nomensen MedanVerified email at student.uhn.ac.id
- Ayu Widya NingsihUniversitas HKBP Nommensen MedanVerified email at student.uhn.ac.id
- Pandapotan SiagianInstitut Teknologi DelVerified email at del.ac.id
- Sarida SiraitPoliteknik Bisnis IndonesiaVerified email at murnisadar.ac.id
- Humiras Betty Marlina SihombingLecturer, Universitas Darma AgungVerified email at darmaagung.ac.id
- Dr. Nathanael Sitanggang, S.T., M.Pd.Universitas Negeri MedanVerified email at unimed.ac.id
- SudiantoEnglish Language Educator, SMA Kristen Kalam Kudus Pematang SiantarVerified email at skkkps.sch.id
- DarwinUniversitas Negeri MedanVerified email at unimed.ac.id
- Syawal GultomUniversitas Negeri MedanVerified email at unimed.ac.id
- Tiodor Sri J. ManaluBiology Teacher, Del Senior HighschoolVerified email at smadel.sch.id
- Calen CalenUniversitas Murni TeguhVerified email at murnisadar.ac.id
- Hilman PardedeUniversitas HKBP NommensenVerified email at uhn.ac.id
- Vladimír VernerCzech University of Life Sciences PragueVerified email at ftz.czu.cz
- Sitepanus ZebuaSTP Dian Mandala GunungsitoliVerified email at stpdianmandala.ac.id
- Umi RokhyatiLecturer, Universitas Ahmad DahlanVerified email at pbi.uad.ac.id