Siti Zarina Mohd Muji, Mohamad Hairol Jabbar, Norfaiza Fuad. ELECTRICAL & ELECTRONIC ENGINEERING: THEORY AND APPLICATIONS SERIES 3: ULTRASONIC AND APPLICATION. Penerbit UTHM; 2016. Accessed July 18, 2024. https://penerbit.uthm.edu.my/omp/index.php/penerbituthm/catalog/book/199