Παραπομπή APA

Jean Piaget. (2006). The origin of intelligence in the child. Routledge.

Παραπομπή Chicago Style

Jean Piaget. The Origin of Intelligence in the Child. Oxon: Routledge, 2006.

Παραπομπή MLA

Jean Piaget. The Origin of Intelligence in the Child. Routledge, 2006.