K.Periyanayagam, S.Gopalakrishnan, and V.Karthikeyan, “EVALUATION OF PHARMACOGNOSTICAL AND PHYTOCHEMICAL PROPERTIES OF THE LEAVES OF PSIDIUM GUAJAVA LINN- LUKNOW 49 VARIETY”, Innovare J H Sci, vol. 1, no. 3, pp. 6–9, Oct. 2013.