APA (7th ed.) Zitazioa
Cornwell, P. D. (2006). At risk. G. P. Putnam's Sons.
Chicago Style (17th ed.) Zitazioa
Cornwell, Patricia Daniels. At Risk. New York: G. P. Putnam's Sons, 2006.
MLA (9th ed.) Zitazioa
Cornwell, Patricia Daniels. At Risk. G. P. Putnam's Sons, 2006.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.