L.S, A. M. L. M. S. R. K. L. I. A. M. E. H. (2023). Preparation and characterization of non-isocyanate polyurethane resins derived from tannin of Acacia mangium bark for the modification of ramie fibers. Central European Forestry Journal, 69(2), . https://doi.org/10.2478/forj-2023-0006
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)L.S, Aristri M.A.; Lubis M.A.R.; Sari R.K.; Kristak L.; Iswanto A.H.; Mardawati E.; Hua. "Preparation and Characterization of Non-isocyanate Polyurethane Resins Derived from Tannin of Acacia Mangium Bark for the Modification of Ramie Fibers." Central European Forestry Journal 69, no. 2 (2023). https://doi.org/10.2478/forj-2023-0006.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)L.S, Aristri M.A.; Lubis M.A.R.; Sari R.K.; Kristak L.; Iswanto A.H.; Mardawati E.; Hua. "Preparation and Characterization of Non-isocyanate Polyurethane Resins Derived from Tannin of Acacia Mangium Bark for the Modification of Ramie Fibers." Central European Forestry Journal, vol. 69, no. 2, 2023, https://doi.org/10.2478/forj-2023-0006.