Modèle:Donnelly1989
De Odonates du Monde
Donnelly T.W. 1989 - The status of Enallagma cyathigerum (Charp.) and E. vernale Gloyd in south-central New york (Zygoptera Coenagrionidae). - Odonatologica, 18 (4), 378–378.
Donnelly T.W. 1989 - The status of Enallagma cyathigerum (Charp.) and E. vernale Gloyd in south-central New york (Zygoptera Coenagrionidae). - Odonatologica, 18 (4), 378–378.
