Akinjogunla, O. J. ., N. O. . Eghafona, and I. O. . Enabulele. “AETIOLOGIC AGENTS OF ACUTE OTITIS MEDIA (AOM): PREVALENCE, ANTIBIOTIC SUSCEPTIBILITY, β-LACTAMASE (βL) AND EXTENDED SPECTRUM β-LACTAMASE (ESBL) PRODUCTION”. Journal of Microbiology, Biotechnology and Food Sciences, vol. 1, no. 3, Dec. 2011, pp. 333-5, https://office2.jmbfs.org/index.php/JMBFS/article/view/4456.