John , A. A., I. A. Matthew, and O. I. Juliet. “Determination of Aspirin Stability in Oil in Water Emulsion Prepared Using Different Oils and Gums”. Nigerian Journal of Pharmaceutical and Applied Science Research, vol. 9, no. 3, Sept. 2020, pp. 40-45, https://nijophasr.net/index.php/nijophasr/article/view/358.