Mairizal, Y. Marlida, Mirzah, and F. Manin, “Isolation and Characterization of Mannanase-producing Bacillus cereus Isolated from the Hindgut of Termites”, Pak. J. Nutr., vol. 17, no. 3, pp. 116–123, Feb. 2018, doi: 10.3923/pjn.2018.116.123.