Syeda Samra Iqbal Jafri, Muhammad Ilyas, and Muhammad Idrees. “Swine Flu: A Threat to Human Health”. African Journal of Pig Farming 2, no. 1 (October 13, 2013): 1–5. Accessed April 27, 2025. https://elixirpublishers.in/index.php/ajpf/article/view/632.