Catalogue of hymenopterous insects in the collection of the British museum... - British Museum (Natural History). Department of Zoology. (Printed by order of the Trustees, 1853)

Catalogue of hymenopterous insects in the collection of the British museum... - British Museum (Natural History). Department of Zoology. (Printed by order of the Trustees, 1853)

Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus - Dalla Torre, K. W. von (Karl Wilhelm), 1850 -1928 (G. Engelmann, 1896)

Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus - Dalla Torre, K. W. von (Karl Wilhelm), 1850 -1928 (G. Engelmann, 1894)

Mitteilungen der Münchner Entomologischen Gesellschaft - Münchner Entomologische Gesellschaft. (Münchner Entomologische Gesellschaft, 1975)