All articles in this issue include authors from 4 Countries of origin (Indonesia, Malaysia, Saudi Arabia, & China)

All articles in this issue include authors from 5 countries of origin (Indonesia, Nigeria, Hungary, Turkey, &, Guyana)

All articles in this issue include authors from 4 countries of origin (Indonesia, Brunei Darussalam, China, & Marocco).

All articles in this issue include authors from 5 countries of origin (Malaysia, Indonesia, Oman, Pakistan, Hungary).