Primandari S, Mulianti, Kaharudin A, Fernanda Y, Generousdi, Narayanan B. Removal of Ferrous using Citric Acid in Patchouli Oil Purification by Complexometry . CUMR [Internet]. 2023 Jan. 23 [cited 2024 Nov. 25];326(3):81-7. Available from: http://kims-imio.com/index.php/main/article/view/289