Evenhuis, H. H. (1982). A study of Hartig's Xystus species with type designations and new synonyms (Hymenoptera: Cynipidae Alloxystinae and Charipinae). Zenodo.
Citazione stile Chigago Style (17a edizione)Evenhuis, H. H. A Study of Hartig's Xystus Species with Type Designations and New Synonyms (Hymenoptera: Cynipidae Alloxystinae and Charipinae). Zenodo, 1982.
Citatione MLA (9a ed.)Evenhuis, H. H. A Study of Hartig's Xystus Species with Type Designations and New Synonyms (Hymenoptera: Cynipidae Alloxystinae and Charipinae). Zenodo, 1982.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.