Al- Rawi, D. N. A., D. J. M. Rashad, and D. B. H. Hussain. “Salivary Alkaline Phosphatase and Periodontal Disease”. Mustansiria Dental Journal, vol. 8, no. 2, Mar. 2018, pp. 208-14, doi:10.32828/mdj.v8i2.329.