Nwachukwu, I. O., and P. A. Nnagbo. “MICROBIAL CONTAMINATION OF TOUCH SCREEN MOBILE PHONES OF STUDENTS ENGAGED IN THE LABORATORY”. Multi-Disciplinary Research and Development Journals Int’l, vol. 5, no. 1, May 2024, p. 10, http://mdrdji.org/index.php/mdj/article/view/63.