Jawla, S., Y. Kumar, and M. Khan. “Isolation of Antidiabetic Principle from <i>Bougainvillea spectabilis</I> Willd (Nyctaginaceae) Stem Bark”. Tropical Journal of Pharmaceutical Research, vol. 12, no. 5, Oct. 2013, pp. 761-5, doi:10.4314/tjpr.v12i5.15.