Al-Khalqi, E. A. A., and H. M. Y. Al-Wadei. “Bacterial Contamination of Children’s Toys in Some Houses in Sana’a City, Yemen”. PSM Microbiology, vol. 10, no. 1, June 2025, pp. 57-63, https://psmjournals.org/index.php/microbiol/article/view/865.