Beighley, L. (2007). Head first SQL. O'Reilly Media.
Chicago Style aipamenaBeighley, Lynn. Head First SQL. Beijing ; Sebastopol, CA: O'Reilly Media, 2007.
MLA aipamenaBeighley, Lynn. Head First SQL. O'Reilly Media, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.