Article Metrics

Abstract view : 1548 times


Copyright (c) 2018 Ester Lia Siahaan, Istiana Istiana, Syafrizaldi Syafrizaldi

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.