APA-referens (7:e uppl.)
Isaacs, N., & Lawrence, E. (2015). A brief introduction to Piaget: The growth of understanding in the young child and new light on children's ideas of number. Agathon Press.
Chicago-referens (17:e uppl.)
Isaacs, Nathan, och Evelyn Lawrence. A Brief Introduction to Piaget: The Growth of Understanding in the Young Child and New Light on Children's Ideas of Number. New York: Agathon Press, 2015.
MLA-referens (9:e uppl.)
Isaacs, Nathan, och Evelyn Lawrence. A Brief Introduction to Piaget: The Growth of Understanding in the Young Child and New Light on Children's Ideas of Number. Agathon Press, 2015.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.