Bich Hang, N. T., P. T. Ky, C. V. Minh, N. P. Thao, and P. V. Kiem. “Premnaodoroside A and 10-O-Trans-P-Methoxycinnamoylcatalpol, Two Iridoid Glycoside Derivatives from the Leaves of Premna Integrifolia L”. Vietnam Journal of Chemistry, vol. 47, no. 2, Aug. 2014, p. 230, doi:10.15625/4572.