Ahmad, Nabaa Malh, and Iqbal Salman Muhammd. “Azo Coupling Reaction for Spectrophotometric Determination of Sulfanilamide Using β -Naphthol As a Reagent”. Iraqi Journal for Applied Science 1, no. 2 (September 30, 2024): 46–55. Accessed June 8, 2025. https://ijas.uodiyala.edu.iq/index.php/IJAS/article/view/51.