Chaurasia, Umesh Prasad. “Effect of Cetyltrimethylammonium Hydrogen Sulphate on Production of Citric Acid by Aspergillus Niger Ncim-2101”. Academic Voices: A Multidisciplinary Journal 7 (October 17, 2018): 59–63. Accessed November 23, 2024. https://nepjol.info/index.php/AV/article/view/21372.