Salikin, Md Saion, Abd. Aziz Md Ramli, Muhammad Jamal Md Isa, Husaini Salleh, and Mohd Khalid Matori. 2002. “The Use of Water Phantoms in Quality Control of General X-Ray Machine for Diagnostic Radiology”. Malaysian Journal of Science 21 (December):151-56. https://samudera.um.edu.my/index.php/MJS/article/view/8879.