APA aipamena

Peccei Aurelio. Chasm ahead. Macmillan company.

Chicago Style aipamena

Peccei Aurelio. Chasm Ahead. London: Macmillan company.

MLA aipamena

Peccei Aurelio. Chasm Ahead. Macmillan company.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.