APA (7th ed.) Zitazioa
Dr. Timothy Cooney. (2008). Scott Foresman Science. Pearson.
Chicago Style (17th ed.) Zitazioa
Dr. Timothy Cooney. Scott Foresman Science. New york: Pearson, 2008.
MLA (9th ed.) Zitazioa
Dr. Timothy Cooney. Scott Foresman Science. Pearson, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.