AL Kutubi, Hadeel Salim. “On Randomized Complete Block Design”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 53, no. 2 (August 19, 2020): 230–243. Accessed May 8, 2024. https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/11523.