Good post. I learn something new and challenging on websites I stumbleupon on a daily basis. It will always be exciting to read articles from other writers and use something from other websites.

INDEXED BY:

         

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

CSRID Journal Editor's Office:

Universitas Potensi Utama. Jl. K.L. Yos Sudarso Km 6,5 No.3-A Telp. (061) 6640525 Ext. 214 Tanjung Mulia Medan 20241