1994. Diphtheria epidemic in Europe: emergency and response: Report on a WHO meeting. St. Petersburg, Russia 5-7 July 1993. Copenhagen: WHO.
Citáce podľa APA (7th ed.)(1994). Diphtheria epidemic in Europe: emergency and response: Report on a WHO meeting. St. Petersburg, Russia 5-7 July 1993. WHO.
Citácia podle Chicago (17th ed.)Diphtheria Epidemic in Europe: Emergency and Response: Report on a WHO Meeting. St. Petersburg, Russia 5-7 July 1993. Copenhagen: WHO, 1994.
Citácia podľa MLA (8th ed.)Diphtheria Epidemic in Europe: Emergency and Response: Report on a WHO Meeting. St. Petersburg, Russia 5-7 July 1993. WHO, 1994.
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