A. Mohd Zin, M. Almatary, M. Abu Bakar, R. Latih, and N. Jailani, “Blocks Correctness Evaluation Methodology for Block-Based Software Development”, Int. J. Adv. Sci. Eng. Inf. Technol., vol. 8, no. 6, pp. 2663–2669, Dec. 2018.