Soraya, S., E. Sukara, and E. Sinaga. “Identification of Chemical Compounds in Ziziphus Mauritiana Fruit Juice by GC-MS and LC-MS/MS Analysis”. International Journal of Biological, Physical and Chemical Studies, vol. 4, no. 2, Sept. 2022, pp. 11-19, doi:10.32996/ijbpcs.2022.4.2.2.