Williamson, S. R. (1949). Vital primary arithmetic. London: Macmillan and Co..
Chicago Style CitationWilliamson, Samuel R. Vital Primary Arithmetic. London: Macmillan and Co., 1949.
MLA CitationWilliamson, Samuel R. Vital Primary Arithmetic. London: Macmillan and Co., 1949.
Warning: These citations may not always be 100% accurate.