K. Zaleha, B. Ibrahim, B. Akbar John and B.Y. Kamaruzzaman
Journal of Biological Sciences 12 ( 8 ): 433 - 437 , 2012
Y.A. Geidam, H. Usman, M.B. Abubakar and B. Ibrahim
Research Journal of Microbiology 2 ( 12 ): 960 - 965 , 2007