APA aipamena

Assaad, F. A., & Maxwell-Lyons, F. (1967). Systematic observer variation in trachoma studies.

Chicago Style aipamena

Assaad, F. A., and F. Maxwell-Lyons. Systematic Observer Variation in Trachoma Studies. 1967.

MLA aipamena

Assaad, F. A., and F. Maxwell-Lyons. Systematic Observer Variation in Trachoma Studies. 1967.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.