Παραπομπή σε μορφή APA (7η εκδ.)

Isaacs, N. (1960). New light on children's ideas of number: The work of professor Piaget. Ward Lock Educational.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Isaacs, Nathan. New Light on Children's Ideas of Number: The Work of Professor Piaget. London: Ward Lock Educational, 1960.

Παραπομπή σε μορφή MLA (8th εκδ.)

Isaacs, Nathan. New Light on Children's Ideas of Number: The Work of Professor Piaget. Ward Lock Educational, 1960.