Published: 31-12-2021

DOI: https://doi.org/10.19109/ujhki.v5i2.10681
DOI: https://doi.org/10.19109/ujhki.v5i2.10682
DOI: https://doi.org/10.19109/ujhki.v5i2.10683
DOI: https://doi.org/10.19109/ujhki.v5i2.10743
DOI: https://doi.org/10.19109/ujhki.v5i2.10828
DOI: https://doi.org/10.19109/ujhki.v5i2.10880