APA aipamena

KOHLER, R. (2014). Jean Piaget. Bloomsbury Academic.

Chicago Style aipamena

KOHLER, Richard. Jean Piaget. Bloomsbury Academic, 2014.

MLA aipamena

KOHLER, Richard. Jean Piaget. Bloomsbury Academic, 2014.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.