Araw E. Ahmed, and Khalida M. Omar. “Spectrophotometric Estimation of Sulfasalazine Via Oxidative Coupling Reaction Using 8-Amino -2-Naphthlene Sulfonic Acid and Potassium Periodate”. African Journal of Advanced Pure and Applied Sciences (AJAPAS) 2, no. 3 (July 28, 2023): 127–139. Accessed July 3, 2024. https://aaasjournals.com/index.php/ajapas/article/view/450.