Juwairiah, Juwairiah, Yusnia Sinambela, Nurianti Sitorus, and Raju Gobal. 2024. “Analysis of Paper Fiber Types Based on Color Change”. Proceeding International Conference on Religion, Science and Education 3 (March):639-43. https://sunankalijaga.org/prosiding/index.php/icrse/article/view/1094.