Gattegno, C. (1963). Now Johnny can do arithmetic: A guide for the use of the Cuisenaire materials (Rev ed.). Educational Explorers.
Chicago Style (17th ed.) CitationGattegno, Caleb. Now Johnny Can Do Arithmetic: A Guide for the Use of the Cuisenaire Materials. Rev ed. Reading, Berkshire: Educational Explorers, 1963.
MLA (8th ed.) CitationGattegno, Caleb. Now Johnny Can Do Arithmetic: A Guide for the Use of the Cuisenaire Materials. Rev ed. Educational Explorers, 1963.
Warning: These citations may not always be 100% accurate.