(2005). Special Kids Learning Series – Speech & Skill Development. Numbers & Quantities.
Chicago Style (17th ed.) ZitazioaSpecial Kids Learning Series – Speech & Skill Development. Numbers & Quantities. 2005.
MLA (9th ed.) ZitazioaSpecial Kids Learning Series – Speech & Skill Development. Numbers & Quantities. 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.