Olvång, H. (1987). Investigations of resistance to fungicides in some plant pathogen-fungicide systems in Sweden. Swedish University of Agricultural Sciences, Dept. of Plant and Forest Protection.
Chicago-referens (17:e uppl.)Olvång, Hans. Investigations of Resistance to Fungicides in Some Plant Pathogen-fungicide Systems in Sweden. Uppsala: Swedish University of Agricultural Sciences, Dept. of Plant and Forest Protection, 1987.
MLA-referens (8:e uppl.)Olvång, Hans. Investigations of Resistance to Fungicides in Some Plant Pathogen-fungicide Systems in Sweden. Swedish University of Agricultural Sciences, Dept. of Plant and Forest Protection, 1987.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.