Clarke, E. L., Evans, J. R., & Smeeth, L. (2018). Community screening for visual impairment in older people. Cochrane Database Syst Rev.
Chicago Style aipamenaClarke, Emily L., Jennifer R. Evans, and Liam Smeeth. "Community Screening for Visual Impairment in Older People." Cochrane Database Syst Rev 2018.
MLA aipamenaClarke, Emily L., Jennifer R. Evans, and Liam Smeeth. "Community Screening for Visual Impairment in Older People." Cochrane Database Syst Rev 2018.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.