for Young People, I. B. o. B. (2021). Lectura 2001 para Leer el XXI.
Chicago Style aipamenafor Young People, International Board on Books. Lectura 2001 Para Leer El XXI. 2021.
MLA aipamenafor Young People, International Board on Books. Lectura 2001 Para Leer El XXI. 2021.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.