<ref name="Kutter_1967">{{cite journal |first1=H. |last1=Kutter |year=1967 |title=Einige Ergebnisse weiterer ''Coptoformica''-Studien |url=https://antcat.org/documents/1968/4726.pdf |journal=Insectes Sociaux |publisher= |volume=13 |issue= |pages=227–240 |doi= }}</ref>