Abdullah, mohammad. “Spectrophotometric Determination of Fe(II) and Fe(III) Using 5-(4-Ethylphenyl Azo ) 2-Hydroxybenzaldehyde Oxime Reagent”. Zanco Journal of Pure and Applied Sciences 33, no. 6 (January 4, 2022): 21–29. Accessed May 17, 2024. https://zancojournal.su.edu.krd/index.php/JPAS/article/view/51.