Kudrna, O. (2019). Distribution of butterflies and skippers in Europe: (Lepidoptera: Rhopalocera, Grypocera) : 24 years mapping European butterflies (1995-2019) : final report (First edition.). Spolecnost pro Ochranu Motylu (SOM).
Chicago-Zitierstil (17. Ausg.)Kudrna, Otakar. Distribution of Butterflies and Skippers in Europe: (Lepidoptera: Rhopalocera, Grypocera) : 24 Years Mapping European Butterflies (1995-2019) : Final Report. First edition. Prachatice: Spolecnost pro Ochranu Motylu (SOM), 2019.
MLA-Zitierstil (9. Ausg.)Kudrna, Otakar. Distribution of Butterflies and Skippers in Europe: (Lepidoptera: Rhopalocera, Grypocera) : 24 Years Mapping European Butterflies (1995-2019) : Final Report. First edition. Spolecnost pro Ochranu Motylu (SOM), 2019.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.