APA Citation

Gattegno, C. (1968). Mathematics with numbers in colour. Educational Explorers Limited.

Chicago Style Citation

Gattegno, Caleb. Mathematics With Numbers in Colour. Educational Explorers Limited, 1968.

MLA Citation

Gattegno, Caleb. Mathematics With Numbers in Colour. Educational Explorers Limited, 1968.

Warning: These citations may not always be 100% accurate.