Article Metrics

Abstract view : 406 times

Refbacks

  • There are currently no refbacks.


Copyright (c) 2022 Afrida Siahaan, Lamhot Sihombing

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.