Não informado. (1987). Orthodontic Review. University of Missouri, School of Dentistry.
Lua i Stíl Chicago (17ú heag.)Não informado. Orthodontic Review. Kansas City, Kan: University of Missouri, School of Dentistry, 1987.
Lua MLA (8ú heag.)Não informado. Orthodontic Review. University of Missouri, School of Dentistry, 1987.
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