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Available at: &lt;<a href="http://103.29.196.112/index.php/jekt/article/view/62367" target="_new">http://103.29.196.112/index.php/jekt/article/view/62367</a>&gt;. Date accessed: 18 dec. 2025.
doi: <a href="https://doi.org/10.24843/JEKT.2021.v14.i01.p04">https://doi.org/10.24843/JEKT.2021.v14.i01.p04</a>.