APA (7th ed.) Citation

Zimiles, H. (1965). The development of differentiation and conservation of number. Bank Street College of Education.

Chicago Style (17th ed.) Citation

Zimiles, Herbert. The Development of Differentiation and Conservation of Number. New York: Bank Street College of Education, 1965.

MLA (9th ed.) Citation

Zimiles, Herbert. The Development of Differentiation and Conservation of Number. Bank Street College of Education, 1965.