<ref name="Don_&_Jones_1993">{{cite journal |first1=A. W. |last1=Don |first2=T. H. |last2=Jones |year=1993 |title=The stereochemistry of 3-butyl-5-(5-hexenyl)-pyrrolizidine from populations of ''Monomorium antarcticum'' (Smith) (Hymenoptera: Formicidae) and its possible role as a unique taxonomic character |url= |journal=New Zealand Entomologist |publisher= |volume=16 |issue= |pages=45–48 |doi= }}</ref>