APA-referens (7:e uppl.)
Stefferud, A. Animal diseases. The united states departament of de agriculture (1a.ed.). The united states departament of agriculture. Washintong D.C.
Chicago-referens (17:e uppl.)
Stefferud, Alfred. Animal Diseases. The United States Departament of De Agriculture. 1a.ed. The united states departament of agriculture. Washintong D.C.
MLA-referens (9:e uppl.)
Stefferud, Alfred. Animal Diseases. The United States Departament of De Agriculture. 1a.ed. The united states departament of agriculture. Washintong D.C.
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