Lisnawati Tamba University of Sumatera Utara Indonesia
Zulkifli Lubis University of Sumatera Utara Indonesia
Albiner Siagian University of SUmatera Utara Indonesia
ResearcherID: J-1399-2016
DOI : 10.52155
Impact Factor:
ICV = 82.40
SJIF = 7.019
IFSIJ = 7.625
IJIFM = 7.36