<ref name="Billen_&_Boven_1983">{{cite journal |first1=J. P. J. |last1=Billen |first2=J. K. A. |last2=Boven |year=1983 |title=The chemical composition of the Dufour gland contents of workers of the ant ''Formica cunicularia''. A test for recognition of the species |url= |journal=Annales de la Société Royale Zoologique de Belgique |publisher= |volume=113 |issue= |pages=283–289 |doi= }}</ref>