APA aipamena

Piaget, J. (1973). Main trends in psychology. G Allen & Unwin.

Chicago Style aipamena

Piaget, Jean. Main Trends in Psychology. G Allen & Unwin, 1973.

MLA aipamena

Piaget, Jean. Main Trends in Psychology. G Allen & Unwin, 1973.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.