(2012). ACI Structural Journal September-Desember 2012. American Concrete Institute.
Chicago Style aipamenaACI Structural Journal September-Desember 2012. American Concrete Institute, 2012.
MLA aipamenaACI Structural Journal September-Desember 2012. American Concrete Institute, 2012.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.