APA Citation

Gattegno, C. (1970). Mathematics with numbers in colour. Educational Exploress Limited.

Chicago Style Citation

Gattegno, C. Mathematics With Numbers in Colour. Educational Exploress Limited, 1970.

MLA Citation

Gattegno, C. Mathematics With Numbers in Colour. Educational Exploress Limited, 1970.

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