Viani, Vivin, and Untung Prayudie. “Pengaruh Penambahan Serat Biduri (Calotropis Gigantea) Terhadap Sifat Mekanik Komposit Polipropilena Daur Ulang/Serat Biduri”. Journal of Polymer Chemical Engineering and Technology 1, no. 1 (February 7, 2024): 17-22. Accessed December 4, 2024. https://jurnal.stmi.ac.id/index.php/jpcet/article/view/237.