World Health Organization. (2003). Quality assurance in bacteriology and immunology. World Health Organization.
Chicago Style aipamenaWorld Health Organization. Quality Assurance in Bacteriology and Immunology. New Delhi: World Health Organization, 2003.
MLA aipamenaWorld Health Organization. Quality Assurance in Bacteriology and Immunology. World Health Organization, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.