Singson, M. Z. (2010) “Effect of Fertilizer Treatment and Harvesting Time on Principal Chemical Constituents of <I>Oroxylum indicum</I> Vent. and <I>Andrographis paniculata</I> Nees”, Indian Forester, 136(5), pp. 580–587. doi: 10.36808/if/2010/v136i5/4691.