E. D. Ikasari, I. M. Cahyani, and A. Wulandari, “Physical Characteristics and Stability Mucoadhesive Microgranules Of Ranitidine HCl With Aloe Vera Powder Polymer and Carbopol 934P in Temperature 2 derajat Celcius and 25 derajat Celcius”, Repository, Sep. 2018.