APA (7th ed.) Zitazioa
GREIG, D. SUCCESSFUL USE OF LOW VISION AIDS: VISUAL AND PSYCHOLOGICAL FACTORS.
Chicago Style (17th ed.) Zitazioa
GREIG, D.E. SUCCESSFUL USE OF LOW VISION AIDS: VISUAL AND PSYCHOLOGICAL FACTORS.
MLA (9th ed.) Zitazioa
GREIG, D.E. SUCCESSFUL USE OF LOW VISION AIDS: VISUAL AND PSYCHOLOGICAL FACTORS.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.