<ref name="Hölldobler_&_Haskins_1977">{{cite journal |first1=B. |last1=Hölldobler |first2=C. P. |last2=Haskins |year=1977 |title=Sexual calling behavior in primitive ants |url= |journal=Science (Washington, D. C.) |publisher= |volume=195 |issue= |pages=793–794 |doi= }}</ref>