Thapa, R. , Raghubanshi, B.R. and Singh, A. 2019. Antimicrobial Effect of Psidium guajava L. Leave Extract in Correlation with Biofilm Formation and Metallo-β-Lactamase Production in Multidrug Resistant Pseudomonas aeruginosa: Effect of plant extract on multi drug resistant bacteria. Proceedings of the Pakistan Academy of Sciences: B. Life and Environmental Sciences. 56, 3 (Sep. 2019), 113–120.