Kala, C., S. S. Ali, and S. Chaudhary. “COMPARATIVE PHARMACOGNOSTICAL EVALUATION OF COSTUS SPECIOSUS (WILD GINGER) AND ZINGIBER OFFICINALE (GINGER) RHIZOME”. International Journal of Current Pharmaceutical Research, vol. 8, no. 4, Oct. 2016, pp. 19-23, doi:10.22159/ijcpr.2016v8i4.15270.